How to create the instance of a class and to use this object remotely

I have to change a standalone program to do it working on a local net.
the program is prepared for this adjustment, because the only problem for this change came from the use of the database; and, in the application, all the accesses to the database come from only a class that supplies a connection to the database.
In this way I think that I could have (in a local net) a "server application" that has the database embedded inside it.
Furthermore, some client applications (running in different computers of the net) could get access to the database through the connection that comes from an instance of the class that, in the "server application", is made to provide the connection to the database.
I think this could be a good idea...
But I don't have practice with distributed applications and I would ask some suggestion about the way to realize my modification.
(in particular how to get and use, in the "client applications", the instance of the class that give the connection to the database from the "server application").
I would have some help..
thank in advance
regards
tonyMrsangelo.

tonyMrsangelo wrote:
I have to change a standalone program to do it working on a local net.
the program is prepared for this adjustment, because the only problem for this change came from the use of the database; and, in the application, all the accesses to the database come from only a class that supplies a connection to the database.
In this way I think that I could have (in a local net) a "server application" that has the database embedded inside it.
Furthermore, some client applications (running in different computers of the net) could get access to the database through the connection that comes from an instance of the class that, in the "server application", is made to provide the connection to the database.
I think this could be a good idea... Which is why JEE and implementations of that exist.
But I don't have practice with distributed applications and I would ask some suggestion about the way to realize my modification.
(in particular how to get and use, in the "client applications", the instance of the class that give the connection to the database from the "server application").
You can't pass a connection from a server to a client. Nothing will do that.
As suggested you can create a simple RMI server/client set up. Or use a more feature rich (and much more complex) JEE container.
RMI is simple enough for its own tutorial
[http://java.sun.com/docs/books/tutorial/rmi/index.html]
JEE (previously called J2EE) is much more complex and requires books. You can get a brief overlook from the following
[http://java.sun.com/javaee/]

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    SGA use (MB):     50,971.4     50,971.4
    PGA use (MB):     545.5     1,066.3
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    Global Cache blocks served:     1.86     4.62
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    GCS/GES messages sent:     53.82     133.65
    DBWR Fusion writes:     0.52     1.30
    Estd Interconnect traffic (KB)     65.50     
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    Buffer access - remote cache %:     0.02
    Buffer access - disk %:     0.34
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    Avg global cache cr block receive time (ms):     1.7
    Avg global cache current block receive time (ms):     1.0
    Avg global cache cr block build time (ms):     0.0
    Avg global cache cr block send time (ms):     0.0
    Global cache log flushes for cr blocks served %:     1.4
    Avg global cache cr block flush time (ms):     0.9
    Avg global cache current block pin time (ms):     0.0
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    Avg GES message process time (ms):     0.0
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    % of indirect sent messages:     17.10
    % of flow controlled messages:     3.77
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    Interface     IP Address     Pub     Source     IP     Pub     Src
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    Statistic Name     Time (s)     % of DB Time
    sql execute elapsed time     1,925.20     94.38
    DB CPU     1,789.38     87.72
    connection management call elapsed time     99.65     4.89
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    hard parse elapsed time     25.01     1.23
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    sequence load elapsed time     0.06     0.00
    repeated bind elapsed time     0.02     0.00
    hard parse (bind mismatch) elapsed time     0.01     0.00
    DB time     2,039.77     
    background elapsed time     122.00     
    background cpu time     113.42     
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    NUM_LCPUS     0     
    NUM_VCPUS     0     
    AVG_BUSY_TIME     12,339     
    AVG_IDLE_TIME     348,838     
    AVG_IOWAIT_TIME     221     
    AVG_SYS_TIME     2,274     
    AVG_USER_TIME     9,944     
    BUSY_TIME     299,090     
    IDLE_TIME     8,375,051     
    IOWAIT_TIME     6,820     
    SYS_TIME     57,512     
    USER_TIME     241,578     
    LOAD     1     2
    OS_CPU_WAIT_TIME     312,200     
    PHYSICAL_MEMORY_BYTES     137,438,953,472     
    NUM_CPUS     24     
    NUM_CPU_CORES     12     
    GLOBAL_RECEIVE_SIZE_MAX     1,310,720     
    GLOBAL_SEND_SIZE_MAX     1,310,720     
    TCP_RECEIVE_SIZE_DEFAULT     16,384     
    TCP_RECEIVE_SIZE_MAX     9,223,372,036,854,775,807     
    TCP_RECEIVE_SIZE_MIN     4,096     
    TCP_SEND_SIZE_DEFAULT     16,384     
    TCP_SEND_SIZE_MAX     9,223,372,036,854,775,807     
    TCP_SEND_SIZE_MIN     4,096     
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    Operating System Statistics - Detail
    Snap Time     Load     %busy     %user     %sys     %idle     %iowait
    27-Nov 16:00:06     0.58                         
    27-Nov 17:00:17     1.50     3.45     2.79     0.66     96.55     0.08
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    Foreground Wait Class
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    DB CPU               1,789          87.72
    User I/O     61,229     0     92     1     4.49
    Other     102,743     40     31     0     1.50
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    Application     52     8     0     0     0.00
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    Foreground Wait Events
    * s - second, ms - millisecond - 1000th of a second
    * Only events with Total Wait Time (s) >= .001 are shown
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    db file sequential read     27,531     0     50     2     18.93     2.45
    db file scattered read     26,322     0     30     1     18.10     1.47
    row cache lock     1,798     0     20     11     1.24     0.96
    OJVM: Generic     36     42     15     421     0.02     0.74
    db file parallel read     394     0     7     19     0.27     0.36
    control file sequential read     22,248     0     6     0     15.30     0.28
    reliable message     4,439     0     4     1     3.05     0.18
    gc current grant busy     7,597     0     3     0     5.22     0.16
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    DFS lock handle     3,208     0     3     1     2.21     0.16
    direct path write temp     4,842     0     3     1     3.33     0.15
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    gc cr grant 2-way     5,151     0     1     0     3.54     0.06
    direct path read temp     1,722     0     1     1     1.18     0.05
    gc current block 2-way     1,807     0     1     0     1.24     0.03
    os thread startup     6     0     1     108     0.00     0.03
    name-service call wait     12     0     1     47     0.01     0.03
    PX Deq: Signal ACK RSG     2,046     50     0     0     1.41     0.02
    log file switch completion     3     0     0     149     0.00     0.02
    rdbms ipc reply     3,610     0     0     0     2.48     0.02
    gc current grant 2-way     1,432     0     0     0     0.98     0.02
    library cache pin     903     32     0     0     0.62     0.02
    PX Deq: reap credit     35,815     100     0     0     24.63     0.01
    log file sync     383     0     0     1     0.26     0.01
    Disk file operations I/O     405     0     0     0     0.28     0.01
    library cache lock     418     3     0     0     0.29     0.01
    kfk: async disk IO     23,159     0     0     0     15.93     0.01
    gc current block busy     4     0     0     35     0.00     0.01
    gc current multi block request     1,206     0     0     0     0.83     0.01
    ges message buffer allocation     38,526     0     0     0     26.50     0.00
    enq: FB - contention     131     0     0     0     0.09     0.00
    undo segment extension     8     100     0     6     0.01     0.00
    CSS initialization     8     0     0     6     0.01     0.00
    SQL*Net message to client     14,600     0     0     0     10.04     0.00
    enq: HW - contention     96     0     0     0     0.07     0.00
    CSS operation: action     8     0     0     4     0.01     0.00
    gc cr block busy     33     0     0     1     0.02     0.00
    latch free     30     0     0     1     0.02     0.00
    enq: TM - contention     49     6     0     0     0.03     0.00
    enq: JQ - contention     19     100     0     1     0.01     0.00
    SQL*Net more data to client     666     0     0     0     0.46     0.00
    asynch descriptor resize     3,179     100     0     0     2.19     0.00
    latch: shared pool     3     0     0     3     0.00     0.00
    CSS operation: query     24     0     0     0     0.02     0.00
    PX Deq: Signal ACK EXT     72     0     0     0     0.05     0.00
    KJC: Wait for msg sends to complete     269     0     0     0     0.19     0.00
    latch: object queue header operation     4     0     0     1     0.00     0.00
    gc cr block congested     5     0     0     0     0.00     0.00
    utl_file I/O     11     0     0     0     0.01     0.00
    enq: TO - contention     3     33     0     0     0.00     0.00
    SQL*Net message from client     14,600     0     219,478     15033     10.04     
    jobq slave wait     7,726     100     3,856     499     5.31     
    PX Deq: Execution Msg     10,556     19     50     5     7.26     
    PX Deq: Execute Reply     2,946     31     27     9     2.03     
    PX Deq: Parse Reply     3,157     35     3     1     2.17     
    PX Deq: Join ACK     2,976     28     2     1     2.05     
    PX Deq Credit: send blkd     7     14     0     4     0.00     
    Back to Wait Events Statistics
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    Background Wait Events
    * ordered by wait time desc, waits desc (idle events last)
    * Only events with Total Wait Time (s) >= .001 are shown
    * %Timeouts: value of 0 indicates value was < .5%. Value of null is truly 0
    Event     Waits     %Time -outs     Total Wait Time (s)     Avg wait (ms)     Waits /txn     % bg time
    os thread startup     140     0     13     90     0.10     10.35
    db file parallel write     8,233     0     6     1     5.66     5.08
    log file parallel write     3,906     0     6     1     2.69     4.62
    log file sequential read     350     0     5     16     0.24     4.49
    control file sequential read     13,737     0     5     0     9.45     3.72
    DFS lock handle     2,990     27     2     1     2.06     1.43
    db file sequential read     921     0     2     2     0.63     1.39
    SQL*Net break/reset to client     18     0     1     81     0.01     1.19
    control file parallel write     2,455     0     1     1     1.69     1.12
    ges lms sync during dynamic remastering and reconfig     24     100     1     50     0.02     0.98
    library cache load lock     35     0     1     24     0.02     0.68
    ASM file metadata operation     3,483     0     1     0     2.40     0.65
    enq: CO - master slave det     1,203     100     1     0     0.83     0.46
    kjbdrmcvtq lmon drm quiesce: ping completion     9     0     1     62     0.01     0.46
    enq: WF - contention     11     0     0     35     0.01     0.31
    CGS wait for IPC msg     32,702     100     0     0     22.49     0.19
    gc object scan     28,788     100     0     0     19.80     0.15
    row cache lock     535     0     0     0     0.37     0.14
    library cache pin     370     55     0     0     0.25     0.12
    ksxr poll remote instances     19,119     100     0     0     13.15     0.11
    name-service call wait     6     0     0     19     0.00     0.10
    gc current block 2-way     304     0     0     0     0.21     0.09
    gc cr block 2-way     267     0     0     0     0.18     0.08
    gc cr grant 2-way     355     0     0     0     0.24     0.08
    ges LMON to get to FTDONE     3     100     0     24     0.00     0.06
    enq: CF - contention     145     76     0     0     0.10     0.05
    PX Deq: reap credit     8,842     100     0     0     6.08     0.05
    reliable message     126     0     0     0     0.09     0.05
    db file scattered read     19     0     0     3     0.01     0.05
    library cache lock     162     1     0     0     0.11     0.04
    latch: shared pool     2     0     0     27     0.00     0.04
    Disk file operations I/O     504     0     0     0     0.35     0.04
    gc current grant busy     148     0     0     0     0.10     0.04
    gcs log flush sync     84     0     0     1     0.06     0.04
    ges message buffer allocation     24,934     0     0     0     17.15     0.02
    enq: CR - block range reuse ckpt     83     0     0     0     0.06     0.02
    latch free     22     0     0     1     0.02     0.02
    CSS operation: action     13     0     0     2     0.01     0.02
    CSS initialization     4     0     0     6     0.00     0.02
    direct path read     1     0     0     21     0.00     0.02
    rdbms ipc reply     153     0     0     0     0.11     0.01
    db file parallel read     2     0     0     8     0.00     0.01
    direct path write     5     0     0     3     0.00     0.01
    gc current multi block request     49     0     0     0     0.03     0.01
    gc current block busy     5     0     0     2     0.00     0.01
    enq: PS - contention     24     50     0     0     0.02     0.01
    gc cr multi block request     54     0     0     0     0.04     0.01
    ges generic event     1     100     0     10     0.00     0.01
    gc current grant 2-way     35     0     0     0     0.02     0.01
    kfk: async disk IO     183     0     0     0     0.13     0.01
    Log archive I/O     3     0     0     2     0.00     0.01
    gc buffer busy acquire     2     0     0     3     0.00     0.00
    LGWR wait for redo copy     123     0     0     0     0.08     0.00
    IPC send completion sync     18     0     0     0     0.01     0.00
    enq: TA - contention     11     0     0     0     0.01     0.00
    read by other session     2     0     0     2     0.00     0.00
    enq: TM - contention     9     89     0     0     0.01     0.00
    latch: ges resource hash list     135     0     0     0     0.09     0.00
    PX Deq: Slave Session Stats     12     0     0     0     0.01     0.00
    KJC: Wait for msg sends to complete     89     0     0     0     0.06     0.00
    enq: TD - KTF dump entries     8     0     0     0     0.01     0.00
    enq: US - contention     7     0     0     0     0.00     0.00
    CSS operation: query     12     0     0     0     0.01     0.00
    enq: TK - Auto Task Serialization     6     100     0     0     0.00     0.00
    PX Deq: Signal ACK RSG     24     50     0     0     0.02     0.00
    log file single write     6     0     0     0     0.00     0.00
    enq: WL - contention     2     100     0     1     0.00     0.00
    ADR block file read     13     0     0     0     0.01     0.00
    ADR block file write     5     0     0     0     0.00     0.00
    latch: object queue header operation     1     0     0     1     0.00     0.00
    gc cr block busy     1     0     0     1     0.00     0.00
    rdbms ipc message     103,276     67     126,259     1223     71.03     
    PX Idle Wait     6,467     67     12,719     1967     4.45     
    wait for unread message on broadcast channel     7,240     100     7,221     997     4.98     
    gcs remote message     218,809     84     7,213     33     150.49     
    DIAG idle wait     203,228     95     7,185     35     139.77     
    shared server idle wait     121     100     3,630     30000     0.08     
    ASM background timer     3,343     0     3,611     1080     2.30     
    Space Manager: slave idle wait     723     100     3,610     4993     0.50     
    heartbeat monitor sleep     722     100     3,610     5000     0.50     
    ges remote message     73,089     52     3,609     49     50.27     
    dispatcher timer     66     88     3,608     54660     0.05     
    pmon timer     1,474     82     3,607     2447     1.01     
    PING     1,487     19     3,607     2426     1.02     
    Streams AQ: qmn slave idle wait     125     0     3,594     28754     0.09     
    Streams AQ: qmn coordinator idle wait     250     50     3,594     14377     0.17     
    smon timer     18     50     3,505     194740     0.01     
    JOX Jit Process Sleep     73     100     976     13370     0.05     
    class slave wait     56     0     605     10806     0.04     
    KSV master wait     2,215     98     1     0     1.52     
    SQL*Net message from client     109     0     0     2     0.07     
    PX Deq: Parse Reply     27     44     0     1     0.02     
    PX Deq: Join ACK     30     40     0     1     0.02     
    PX Deq: Execute Reply     20     30     0     0     0.01     
    Streams AQ: RAC qmn coordinator idle wait     259     100     0     0     0.18     
    Back to Wait Events Statistics
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    Wait Event Histogram
    * Units for Total Waits column: K is 1000, M is 1000000, G is 1000000000
    * % of Waits: value of .0 indicates value was <.05%; value of null is truly 0
    * % of Waits: column heading of <=1s is truly <1024ms, >1s is truly >=1024ms
    * Ordered by Event (idle events last)
              % of Waits
    Event     Total Waits     <1ms     <2ms     <4ms     <8ms     <16ms     <32ms     <=1s     >1s
    ADR block file read     13     100.0                                   
    ADR block file write     5     100.0                                   
    ADR file lock     6     100.0                                   
    ARCH wait for archivelog lock     3     100.0                                   
    ASM file metadata operation     3483     99.6     .1     .1                    .2     
    CGS wait for IPC msg     32.7K     100.0                                   
    CSS initialization     12     50.0                    50.0               
    CSS operation: action     21     28.6     9.5          61.9                    
    CSS operation: query     36     86.1     5.6     8.3                         
    DFS lock handle     6198     98.6     1.2     .1                    .1     
    Disk file operations I/O     909     95.7     3.6     .7                         
    IPC send completion sync     5469     99.9     .1     .0     .0                    
    KJC: Wait for msg sends to complete     313     100.0                                   
    LGWR wait for redo copy     122     100.0                                   
    Log archive I/O     3     66.7               33.3                    
    OJVM: Generic     36     55.6                              44.4     
    PX Deq: Signal ACK EXT     72     98.6     1.4                              
    PX Deq: Signal ACK RSG     2070     99.7               .0     .1     .0     .1     
    PX Deq: Slave Session Stats     2673     99.7     .2                         .1     .0
    PX Deq: reap credit     44.7K     100.0                                   
    SQL*Net break/reset to client     20     95.0                                   5.0
    SQL*Net message to client     14.7K     100.0                                   
    SQL*Net more data from client     32     100.0                                   
    SQL*Net more data to client     689     100.0                                   
    asynch descriptor resize     3387     100.0                                   
    buffer busy waits     2     100.0                                   
    control file parallel write     2455     96.6     2.2     .6     .6          .1          
    control file sequential read     36K     99.4     .3     .1     .1     .1     .1     .0     
    db file parallel read     397     8.8     .8     5.5     12.6     17.4     46.3     8.6     
    db file parallel write     8233     85.4     10.3     2.3     1.4     .4     .1          
    db file scattered read     26.3K     79.2     1.5     8.2     10.5     .6     .1     .0     
    db file sequential read     28.4K     60.2     3.3     18.0     18.1     .3     .1     .0     
    db file single write     2     100.0                                   
    direct path read     2     50.0                         50.0          
    direct path read temp     1722     95.8     2.8     .1     .5     .8     .1          
    direct path write     6     83.3                    16.7               
    direct path write temp     4842     96.3     2.7     .5     .2     .0     .0     .2     
    enq: AF - task serialization     1     100.0                                   
    enq: CF - contention     145     99.3     .7                              
    enq: CO - master slave det     1203     98.9     .8     .2                         
    enq: CR - block range reuse ckpt     83     100.0                                   
    enq: DR - contention     2     100.0                                   
    enq: FB - contention     131     100.0                                   
    enq: HW - contention     97     100.0                                   
    enq: JQ - contention     19     89.5     10.5                              
    enq: JS - job run lock - synchronize     3     100.0                                   
    enq: MD - contention     1     100.0                                   
    enq: MW - contention     2     100.0                                   
    enq: PS - contention     3207     99.5     .4     .1                         
    enq: TA - contention     11     100.0                                   
    enq: TD - KTF dump entries     8     100.0                                   
    enq: TK - Auto Task Serialization     6     100.0                                   
    enq: TM - contention     58     100.0                                   
    enq: TO - contention     3     100.0                                   
    enq: TQ - DDL contention     1     100.0                                   
    enq: TS - contention     1     100.0                                   
    enq: UL - contention     1     100.0                                   
    enq: US - contention     7     100.0                                   
    enq: WF - contention     11     81.8                              18.2     
    enq: WL - contention     2     50.0     50.0                              
    gc buffer busy acquire     2     50.0               50.0                    
    gc cr block 2-way     4934     99.9     .1                    .0     .0     
    gc cr block busy     35     68.6     31.4                              
    gc cr block congested     6     100.0                                   
    gc cr disk read     2     100.0                                   
    gc cr grant 2-way     4824     100.0     .0                              
    gc cr grant congested     2     100.0                                   
    gc cr multi block request     37.1K     99.8     .2     .0     .0     .0     .0     .0     
    gc current block 2-way     2134     99.9     .0                         .0     
    gc current block busy     7     14.3     14.3          14.3          28.6     28.6     
    gc current block congested     2     100.0                                   
    gc current grant 2-way     1337     99.9     .1                              
    gc current grant busy     7123     99.2     .2     .2     .0     .0     .3     .1     
    gc current grant congested     2     100.0                                   
    gc current multi block request     1260     99.8     .2                              
    gc object scan     28.8K     100.0                                   
    gcs log flush sync     65     95.4          3.1     1.5                    
    ges LMON to get to FTDONE     3                              100.0          
    ges generic event     1                         100.0               
    ges inquiry response     2     100.0                                   
    ges lms sync during dynamic remastering and reconfig     24                         16.7     29.2     54.2     
    ges message buffer allocation     63.1K     100.0                                   
    kfk: async disk IO     23.3K     100.0     .0     .0                         
    kjbdrmcvtq lmon drm quiesce: ping completion     9     11.1                              88.9     
    ksxr poll remote instances     19.1K     100.0                                   
    latch free     52     59.6     40.4                              
    latch: call allocation     2     100.0                                   
    latch: gc element     1     100.0                                   
    latch: gcs resource hash     1     100.0                                   
    latch: ges resource hash list     135     100.0                                   
    latch: object queue header operation     5     40.0     40.0     20.0                         
    latch: shared pool     5     40.0                    20.0     20.0     20.0     
    library cache load lock     74     9.5     5.4     8.1     17.6     10.8     13.5     35.1     
    library cache lock     493     99.2     .4     .4                         
    library cache pin     1186     98.4     .3     1.2     .1                    
    library cache: mutex X     6     100.0                                   
    log file parallel write     3897     72.9     1.5     17.1     7.5     .6     .3     .1     
    log file sequential read     350     4.6               3.1     59.4     30.0     2.9     
    log file single write     6     100.0                                   
    log file switch completion     3                         33.3          66.7     
    log file sync     385     90.4     3.6     4.7     .8     .5               
    name-service call wait     18          5.6     5.6     5.6     16.7     44.4     22.2     
    os thread startup     146                                   100.0     
    rdbms ipc reply     3763     99.7     .3                              
    read by other session     2     50.0          50.0                         
    reliable message     4565     99.7     .2     .0               .0     .1     
    row cache lock     2334     99.3     .2     .1                    .1     .3
    undo segment extension     8     50.0                    37.5     12.5          
    utl_file I/O     11     100.0                                   
    ASM background timer     3343     57.0     .3     .1     .1     .1          21.1     21.4
    DIAG idle wait     203.2K     3.4     .2     .4     18.0     41.4     14.8     21.8     
    JOX Jit Process Sleep     73                                   2.7     97.3
    KSV master wait     2213     99.4     .1     .2                    .3     
    PING     1487     81.0                                   19.0
    PX Deq Credit: send blkd     7     57.1          14.3     14.3          14.3          
    PX Deq: Execute Reply     2966     59.8     .8     9.5     5.6     10.2     2.6     11.4     
    PX Deq: Execution Msg     10.6K     72.4     12.1     2.6     2.5     .1     5.6     4.6     .0
    PX Deq: Join ACK     3006     77.9     22.1     .1                         
    PX Deq: Parse Reply     3184     67.1     31.1     1.6     .2                    
    PX Idle Wait     6466     .2     8.7     4.3     4.8     .3     .1     5.0     76.6
    SQL*Net message from client     14.7K     72.4     2.8     .8     .5     .9     .4     2.8     19.3
    Space Manager: slave idle wait     722                                        100.0
    Streams AQ: RAC qmn coordinator idle wait     259     100.0                                   
    Streams AQ: qmn coordinator idle wait     250     50.0                                   50.0
    Streams AQ: qmn slave idle wait     125                                        100.0
    class slave wait     55     67.3          7.3     1.8     5.5     1.8     7.3     9.1
    dispatcher timer     66     6.1                                   93.9
    gcs remote message     218.6K     7.7     1.8     1.2     1.6     1.7     15.7     70.3     
    ges remote message     72.9K     29.7     5.1     2.7     2.2     1.5     4.0     54.7     
    heartbeat monitor sleep     722                                        100.0
    jobq slave wait     7725                    .1          .0     99.9     
    pmon timer     1474     18.4                                   81.6
    rdbms ipc message     103.3K     20.7     2.7     1.5     1.3     .9     .7     40.7     31.6
    shared server idle wait     121                                        100.0
    smon timer     18                                        100.0
    wait for unread message on broadcast channel     7238                         .3          99.7     
    Back to Wait Events Statistics
    Back to Top
    Wait Event Histogram Detail (64 msec to 2 sec)
    * Units for Total Waits column: K is 1000, M is 1000000, G is 1000000000
    * Units for % of Total Waits: ms is milliseconds s is 1024 milliseconds (approximately 1 second)
    * % of Total Waits: total waits for all wait classes, including Idle
    * % of Total Waits: value of .0 indicates value was <.05%; value of null is truly 0
    * Ordered by Event (only non-idle events are displayed)
              % of Total Waits
    Event     Waits 64ms to 2s     <32ms     <64ms     <1/8s     <1/4s     <1/2s     <1s     <2s     >=2s
    ASM file metadata operation     6     99.8          .1     .1                    
    DFS lock handle     6     99.9               .1     .0               
    OJVM: Generic     16     55.6               2.8          41.7          
    PX Deq: Signal ACK RSG     3     99.9     .0     .1                         
    PX Deq: Slave Session Stats     3     99.9          .0               .0     .0     
    SQL*Net break/reset to client     1     95.0                              5.0     
    control file sequential read     1     100.0          .0                         
    db file parallel read     34     91.4     8.6                              
    db file scattered read     4     100.0     .0          .0                    
    db file sequential read     6     100.0     .0     .0     .0                    
    direct path write temp     11     99.8     .1     .1     .0                    
    enq: WF - contention     2     81.8               18.2                    
    gc cr block 2-way     1     100.0          .0                         
    gc cr multi block request     1     100.0          .0                         
    gc current block 2-way     1     100.0     .0                              
    gc current block busy     2     71.4     28.6                              
    gc current grant busy     8     99.9     .0     .1                         
    ges lms sync during dynamic remastering and reconfig     13     45.8     20.8     33.3                         
    kjbdrmcvtq lmon drm quiesce: ping completion     8     11.1     11.1     77.8                         
    latch: shared pool     1     80.0     20.0                              
    library cache load lock     26     64.9     14.9     12.2     4.1     4.1               
    log file parallel write     2     99.9     .0               .0               
    log file sequential read     10     97.1     2.0     .6     .3                    
    log file switch completion     2     33.3               66.7                    
    name-service call wait     4     77.8          22.2                         
    os thread startup     146               100.0                         
    reliable message     4     99.9          .0               .1          
    row cache lock     2     99.7                    .0     .0          .3
    Back to Wait Events Statistics
    Back to Top
    Wait Event Histogram Detail (4 sec to 2 min)
    * Units for Total Waits column: K is 1000, M is 1000000, G is 1000000000
    * Units for % of Total Waits: s is 1024 milliseconds (approximately 1 second) m is 64*1024 milliseconds (approximately 67 seconds or 1.1 minutes)
    * % of Total Waits: total waits for all wait classes, including Idle
    * % of Total Waits: value of .0 indicates value was <.05%; value of null is truly 0
    * Ordered by Event (only non-idle events are displayed)
              % of Total Waits
    Event     Waits 4s to 2m     <2s     <4s     <8s     <16s     <32s     < 1m     < 2m     >=2m
    row cache lock     6     99.7     .3                              
    Back to Wait Events Statistics
    Back to Top
    Wait Event Histogram Detail (4 min to 1 hr)
    No data exists for this section of the report.
    Back to Wait Events Statistics
    Back to Top
    Service Statistics
    * ordered by DB Time
    Service Name     DB Time (s)     DB CPU (s)     Physical Reads (K)     Logical Reads (K)
    ubshost     1,934     1,744     445     73,633
    SYS$USERS     105     45     1     404
    SYS$BACKGROUND     0     0     1     128
    ubshostXDB     0     0     0     0
    Back to Wait Events Statistics
    Back to Top
    Service Wait Class Stats
    * Wait Class info for services in the Service Statistics section.
    * Total Waits and Time Waited displayed for the following wait classes: User I/O, Concurrency, Administrative, Network
    * Time Waited (Wt Time) in seconds
    Service Name     User I/O Total Wts     User I/O Wt Time     Concurcy Total Wts     Concurcy Wt Time     Admin Total Wts     Admin Wt Time     Network Total Wts     Network Wt Time
    ubshost      60232     90     2644     4     0     0     13302     0
    SYS$USERS      997     2     525     19     0     0     1973     0
    SYS$BACKGROUND      1456     2     1258     14     0     0     0     0
    I am not able to paste the whole awr report. I have paste some of the sections of awr report.
    Please help.
    Thanks and Regards,

  • How to create an instance of a class which is stored in a String?

    I've class name stored in a String Object.
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    This is very dangerous ground because you give up compile-time safety, but you can get a Class object using Class.forName(String). Then you can use methods of the class Class to operate on it (including creating an instance).

  • How to call a instance method without creating the instance of a class

    class ...EXCH_PRD_VERT_NN_MODEL definition
    public section.
      methods CONSTRUCTOR
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          value(I_ALV_RECORDS) type ..../EXCH_VBEL_TT_ALV
          value(I_HEADER) type EDIDC .
      methods QUERY
        importing
          I_IDEX type FLAG
          i_..........
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    Regards.

    You can't execute any instance method without creating instance of the class.
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    Naimesh Patel

  • How to create an instance of a class which is actually an array?

    the following code gives a runtime exception
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    java.lang.ClassCastException
    Message was edited by:
    lalit_mangal
    Message was edited by:
    lalit_mangal

    Try the following code
    import java.lang.reflect.Array;
    public class TestReflection {
         public static void main(String args[]) {
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         private static void printType(Object object) {
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  • How to create the service lines in a sales order using Process_order API

    Hi ,
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    what are the manditory fields for service lines to create using Process_order API.
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    Moderator message - Please do some analysis before posting here - thread locked
    Rob

  • How to see the Currently loged on user and Locks using Enterpirse manager

    Hello Everybody,
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    Hello Asif,
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    SUBSTR(s.server,1,10) SERVER,
    SUBSTR(s.type,1,10) TYPE,
    SUBSTR(s.event,1,20) "WAIT EVENT",
    DECODE(s.command,
    1,'Create Table',
    2,'Insert',
    3,'Select',
    6,'Update',
    7,'Delete',
    8,'Drop',
    9,'Create Index',
    10,'Drop Index',
    12,'Drop Table',
    17,'Grant',
    26,'Lock Table',
    42,'Alter Session',
    43,'Alter User',
    44,'Commit',
    45,'Rollback',
    s.command) COMMAND
    FROM v_$session s, v_$session_wait w
    WHERE (s.sid = w.sid)
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  • How to Get the numeric equivalent of Year and Month with this format....

    Hi Experts!
    I just would like to know how to get the numeric equivalent of the Year and Month if the given format is like this....
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    More Power!

    Hi Jayson,
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    WHEN 2.
    WHEN 3.
    jsut code like this and check the syntaxes.
    Reward points if useful.
    Regards,
    Atish

  • How to delivery the output to both filesystem and printer using BurstingEng

    Hi,
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    the control file i am using is:
    <?xml version="1.0" encoding="UTF-8" ?>
    <xapi:requestset xmlns:xapi="http://xmlns.oracle.com/oxp/xapi">
    <xapi:request select="/TMP001/LIST_G_ORDER_BY/G_ORDER_BY/LIST_G_INVOICE">
    <xapi:delivery>
    <xapi:filesystem output="/tmp/${TRX_NUMBER}"></xapi:filesystem>
    <xapi:print id="xerox6350-2ne" printer="ipp://localhost:631/printers/xerox6350-2ne" copies="1"/>
    </xapi:delivery>
    <xapi:document output-type="pdf" delivery="xerox6350-2ne">
    <xapi:template type="rtf" location="/u04/app/oracle/product/fdev/fdevcomn/java/oracle/apps/fnd/cp/nsfcus/INVOICE.rtf" />
    </xapi:document>
    </xapi:request>
    </xapi:requestset>
    it is giving the following error.
    [102506_094844261][oracle.apps.xdo.batch.DeliveryHelper][EXCEPTION] oracle.apps.xdo.delivery.DeliveryException: File does not exist : /tmp/102506_094840769/3.pdf
    [102506_094844263][oracle.apps.xdo.batch.DeliveryHelper][EXCEPTION] java.io.FileNotFoundException: /tmp/102506_094840769/3.pdf (No such file or directory)
    Thanks in Advance,
    Raj.
    Message was edited by:
    user538335

    Hi,
    This is a bug in 5.6.2. We fixed it in the next release.
    If this is a critical issue for you, please log a TAR and escalate the issue so that we can review it and backport the fix if necessary.
    Thanks,
    Shinji

  • Creating an instance of a class at runtime?

    Does anyone know how to create an instance of a class at RunTime? For example, I want to load classes from a JAR file at RunTime, and then create instances of certain classes of each JAR. I ask this because I do not see how to create an instance of one of those classes the traditional way, SomeClass var = new SomeClass(). I am pretty sure that someone out there has done this and succeeded in doing it. All of the post on this stuff only talk about loading the class from a JAR file, but I have already loaded them using URLClassLoader�s findClass() method. I have also created an instance of the class that findClass() returns using newInstance(), but newInstance() returns an object of type Object. How can I convert this object to an object of type SomeClass? You cannot cast it because the compiler will complain due to the import statement issue. So if you cannot include the import statement because that classpath does not exist, then how the heck would you cast the newInstance() object into a SomeClass object?

    You can cast the returned object to the type you need...that is what I do in my applet. The trick is that you must get the instance of the applets class loader (or you get a classCastException). Pay attention to this line below - that's the real key here.
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             String[] aJarList = new String[10];
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             File fURL1 = new File(GetMainFrame().m_strQuestionnaireFileName);
             URL url1   = new URL(fURL1.toURL(),"");
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             URL url2 = new URL(fURL2.toURL(),"");
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             URL urlControl = new URL(fURLControl.toURL(),"");
             URL urlNewControl = new URL("jar:" + urlControl.toExternalForm() + "!/" );
             File fURLUtil = new File(CSystem.GetBasePath() + "/Research/bin/utlities.jar");
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                   urlList[0] = urlNew;
                   urlList[1] = urlNew2;
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                   urlList = new URL[4];
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                   urlList[1] = urlNewBase;
                   urlList[2] = urlNewControl;
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                 urlList = new URL[1];
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            JarClassLoader jarLoader = new JarClassLoader(urlList,appletClassLoader);
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                Object[] optionsConfirm = { "Ok" };
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                GetMainFrame().m_strQuestionnaireFileName = "";
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                return null;
             Class cSuperclass = cClass.getSuperclass();
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                questBase.InitializeCards();
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                Object[] optionsConfirm = { "Ok" };
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          catch (Exception e)
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    Hex45
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    import java.util.*;
    import javax.swing.*;
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              String minute1, minute2;
              String second1, second2;
              String mill1, mill2, mill3;
              int hr1, hr2;
              int min1, min2;
              int sec1, sec2;
              int mll1, mll2,mll3;       
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              String minute = String.valueOf(c.get(Calendar.MINUTE));
              String second = String.valueOf(c.get(Calendar.SECOND));
              String milliSecond = String.valueOf(c.get(Calendar.MILLISECOND));
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                   hour2 = hour.substring(1,2);
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                   hour2 = hour.substring(0,1);
              if(minute.length()==2){
                   minute1 = minute.substring(0,1);
                   minute2 = minute.substring(1,2);
              }else{
                   minute1 = "0";
                   minute2 = minute.substring(0,1);
              if(second.length()==2){
                   second1 = second.substring(0,1);
                   second2 = second.substring(1,2);
              }else{
                   second1 = "0";
                   second2 = second.substring(0,1);
              if(milliSecond.length()==3){
                   mill1 = milliSecond.substring(0,1);
                   mill2 = milliSecond.substring(1,2);
                   mill3 = milliSecond.substring(2,3);
              }else if(milliSecond.length()==2){
                   mill1 = "0";
                   mill2 = milliSecond.substring(0,1);
                   mill3 = milliSecond.substring(1,2);
              }else{
                   mill1 = "0";
                   mill2 = "0";
                   mill3 = milliSecond.substring(0,1);
              hr1  = Integer.parseInt(hour1);     
              hr2  = Integer.parseInt(hour2);
              min1 = Integer.parseInt(minute1);
              min2 = Integer.parseInt(minute2);
              sec1 = Integer.parseInt(second1);
              sec2 = Integer.parseInt(second2);
              mll1 = Integer.parseInt(mill1);
              mll2 = Integer.parseInt(mill2);
              g2D.setStroke(stroke);
              g2D.setPaint(Color.cyan);
              num.setSpacing(true,8);
              num.setSpacing(true,8);
              if(hr1==0&hr2==0){
                   num.drawNumber(1,g2D);
                   num.setLocation(40,10);
                   num.drawNumber(2,g2D);
              else{
                   if(!(hr1 == 0)){     
                        num.drawNumber(hr1,g2D);
                   num.setLocation(40,10);
                   num.drawNumber(hr2,g2D);
              num.setLocation(70,10);
              num.drawNumber(DigitalNumber.DOTS,g2D);
              num.setLocation(100,10);
              num.drawNumber(min1,g2D);
              num.setLocation(130,10);
              num.drawNumber(min2,g2D);
              num.setLocation(160,10);
              num.drawNumber(DigitalNumber.DOTS,g2D);
              num.setLocation(190,10);
              num.drawNumber(sec1,g2D);
              num.setLocation(220,10);
              num.drawNumber(sec2,g2D);
              /*num.setLocation(250,10);
              num.drawNumber(DigitalNumber.DOTS,g2D);
              num.setLocation(280,10);
              num.drawNumber(mll1,g2D);
              num.setLocation(310,10);
              num.drawNumber(mll2,g2D);
              g2D.setPaint(Color.cyan);
              if((c.get(Calendar.AM_PM))==Calendar.AM){               
                   g2D.drawString("AM",260,20);
              }else{
                   g2D.drawString("PM",260,20);
         String dayOfweek = "";     
         switch(c.get(Calendar.DAY_OF_WEEK)){
              case(Calendar.SUNDAY):
                   dayOfweek = "Sunday, ";
                   break;
              case(Calendar.MONDAY):
                   dayOfweek = "Monday, ";
                   break;
              case(Calendar.TUESDAY):
                   dayOfweek = "Tuesday, ";
                   break;
              case(Calendar.WEDNESDAY):
                   dayOfweek = "Wednesday, ";
                   break;
              case(Calendar.THURSDAY):
                   dayOfweek = "Thursday, ";
                   break;
              case(Calendar.FRIDAY):
                   dayOfweek = "Friday, ";
                   break;
              case(Calendar.SATURDAY):
                   dayOfweek = "Saturday, ";
                   break;
         String month = "";     
         switch(c.get(Calendar.MONTH)){
              case(Calendar.JANUARY):
                   month = "January ";
                   break;
              case(Calendar.FEBRUARY):
                   month = "February ";
                   break;
              case(Calendar.MARCH):
                   month = "March ";
                   break;
              case(Calendar.APRIL):
                   month = "April ";
                   break;
              case(Calendar.MAY):
                   month = "May ";
                   break;
              case(Calendar.JUNE):
                   month = "June ";
                   break;
              case(Calendar.JULY):
                   month = "July ";
                   break;
              case(Calendar.AUGUST):
                   month = "August ";
                   break;
              case(Calendar.SEPTEMBER):
                   month = "September ";
                   break;
              case(Calendar.OCTOBER):
                   month = "October ";
                   break;
              case(Calendar.NOVEMBER):
                   month = "November ";
                   break;
              case(Calendar.DECEMBER):
                   month = "December ";
                   break;
         int day = c.get(Calendar.DAY_OF_MONTH);
         int year = c.get(Calendar.YEAR);
         Font font = new Font("serif",Font.PLAIN,24);
         g2D.setFont(font);
         g2D.drawString(dayOfweek+month+day+", "+year,10,80);
         public static void main(String args[]){
              AppFrame aframe = new AppFrame("Digital Clock");
              Container cpane = aframe.getContentPane();
              final DigitalClock dc = new DigitalClock();
              dc.setBackground(Color.black);
              cpane.add(dc,BorderLayout.CENTER);
              aframe.setSize(310,120);
              aframe.setVisible(true);
              class Task extends TimerTask {
                 public void run() {
                      dc.repaint();
              java.util.Timer timer = new java.util.Timer();
             timer.schedule(new Task(),0L,250L);
    class DigitalNumber {
         private float x=0;
         private float y=0;
         private float size=5;
         private int number;
         private Shape s;
         private float space = 0;
         public static final int DOTS = 10;
         private Color on,off;
         DigitalNumber(){          
              this(0f,0f,5f,Color.cyan,Color.black);          
         DigitalNumber(float x,float y, float size,Color on,Color off){
              this.x = x;
              this.y = y;
              this.size = size;
              this.on = on;
              this.off = off;
         public void drawNumber(int number,Graphics2D g){
              int flag = 0;
              switch(number){
                   case(0):          
                        flag = 125;
                        break;
                   case(1):
                        flag = 96;
                        break;
                   case(2):
                        flag = 55;
                        break;
                   case(3):
                        flag = 103;
                        break;
                   case(4):
                        flag = 106;
                        break;
                   case(5):
                        flag = 79;
                        break;
                   case(6):
                        flag = 94;
                        break;
                   case(7):
                        flag = 97;
                        break;
                   case(8):
                        flag = 127;
                        break;
                   case(9):
                        flag = 107;
                        break;
                   case(DOTS):
                        GeneralPath path = new GeneralPath();
                        path.moveTo(x+(size/2),y+(size/2)-1);
                        path.lineTo(x+(size/2),y+(size/2)+1);
                        path.moveTo(x+(size/2),y+(size/2)+size-1);
                        path.lineTo(x+(size/2),y+(size/2)+size+1);
                        g.setPaint(on);
                        g.draw(path);     
                        return;
              //Top          
              if((flag & 1) == 1){
                   g.setPaint(on);
              }else{
                   g.setPaint(off);
              GeneralPath Top = new GeneralPath();
              Top.moveTo(x + space, y);
              Top.lineTo(x + size - space, y);
              g.draw(Top);
              //Middle
              if((flag & 2) == 2){
                   g.setPaint(on);
              }else{
                   g.setPaint(off);
              GeneralPath Middle = new GeneralPath();
              Middle.moveTo(x + space, y + size); 
              Middle.lineTo(x + size - space,y + size);     
              g.draw(Middle);
              //Bottom
              if((flag & 4) == 4){
                   g.setPaint(on);
              }else{
                   g.setPaint(off);
              GeneralPath Bottom = new GeneralPath();
              Bottom.moveTo(x + space, y + (size * 2));  
              Bottom.lineTo(x + size - space, y + (size * 2));
              g.draw(Bottom);
              //TopLeft
              if((flag & 8) == 8){
                   g.setPaint(on);
              }else{
                   g.setPaint(off);
              GeneralPath TopLeft = new GeneralPath();     
              TopLeft.moveTo(x, y + space);
              TopLeft.lineTo(x, y + size - space);          
              g.draw(TopLeft);
              //BottomLeft
              if((flag & 16) == 16){
                   g.setPaint(on);
              }else{
                   g.setPaint(off);
              GeneralPath BottomLeft = new GeneralPath();     
              BottomLeft.moveTo(x, y + size + space);
              BottomLeft.lineTo(x, y + (size * 2) - space);
              g.draw(BottomLeft);
              //TopRight
              if((flag & 32) == 32){
                   g.setPaint(on);
              }else{
                   g.setPaint(off);
              GeneralPath TopRight = new GeneralPath();     
              TopRight.moveTo(x + size, y + space);
              TopRight.lineTo(x + size, y + size - space);
              g.draw(TopRight);
              //BottomRight
              if((flag & 64) == 64){
                   g.setPaint(on);
              }else{
                   g.setPaint(off);
              GeneralPath BottomRight = new GeneralPath();     
              BottomRight.moveTo(x + size, y + size + space);
              BottomRight.lineTo(x + size, y + (size * 2) - space);
              g.draw(BottomRight);
         public void setSpacing(boolean spacingOn){
              if(spacingOn == false){
                   space = 0;
              else{
                   this.setSpacing(spacingOn,5f);
         public void setSpacing(boolean spacingOn,float gap){
              if(gap<2){
                   gap = 2;
              if(spacingOn == true){
                   space = size/gap;
         public void setLocation(float x,float y){
              this.x = x;
              this.y = y;
         public void setSize(float size){
              this.size = size;
    class AppFrame extends JFrame{
         AppFrame(){
              this("Demo Frame");
         AppFrame(String title){
              super(title);
              setSize(500,500);
              setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

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