Using intern() with String objects

Hi, I was wondering if anybody could explain to me more about using the method intern() with String objects.
Suppose I have a String, say testString1.
I want to make it uppercase and I would like to refer to it/use it in many places in the code.
Does using the statement
testString1.toUppercase().intern()
put the uppercase testString1 in some kind of a pool? so that everytime I call testString1.toUppercase(), a new testString1 in uppercase is not created each time? Instead it is taken from the pool? Is that how this works?
I would appreciate a response from anybody who knows about this stuff.
Thanks.

No !!!... It doesn't work that way.
I would recommand you (and anyone alse) not to use String.intern() unless you have a COMPLETE understanding of how it works.

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Help with string object code

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Can we use Iteartor with String[ ] a

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Can we use sequences with strings?

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overrule. wrote:
warnerja wrote:
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Using sets with Strings

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Edited by: edsc86 on Nov 18, 2008 7:03 PM
Edited by: edsc86 on Nov 18, 2008 7:04 PM
Edited by: edsc86 on Nov 18, 2008 7:05 PM

Dude! Do NOT screw around with the colors like that. It makes you post way hard to read. Use the CODE button or [[code] and [[/code] tags for sections of code, and an occasional italic or bold for emphasis, and the quote button or a > for quoting.
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Set<String> set = new HashSet<String>();
boolean b1 = set.add("x"); // adds x, returns true
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PartitionedCache{Name=DistributedCacheWithPublishingCacheStore, State=(SERVICE_STARTED), LocalStorage=enabled, PartitionCount=257, BackupCount=1, AssignedPartitions=257, BackupPartitions=0}
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2011-02-11 13:08:37.925/159.229 Oracle Coherence GE 3.6.1.1 <D5> (thread=Proxy:ExtendTcpProxyService:TcpAcceptor, member=1): An exception occurred while processing a InvocationRequest for Service=Proxy:ExtendTcpProxyService:TcpAcceptor: (Wrapped: Failed to publish a batch with the publisher [Active Publisher] on cache [source-cache]) java.lang.IllegalStateException: Attempted to publish to cache passive-cache
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     at com.tangosol.coherence.component.net.extend.Channel.receive(Channel.CDB:26)
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Caused by: java.lang.IllegalStateException: Attempted to publish to cache passive-cache
     at com.oracle.coherence.patterns.pushreplication.publishers.cache.AbstractCachePublisher.publishBatch(AbstractCachePublisher.java:163)
     at com.oracle.coherence.patterns.pushreplication.publishers.RemoteClusterPublisher$RemotePublishingAgent.run(RemoteClusterPublisher.java:343)
     ... 9 more
Caused by: (Wrapped) java.io.StreamCorruptedException: invalid type: 169
     at com.tangosol.util.ExternalizableHelper.fromBinary(ExternalizableHelper.java:265)
     at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.PartitionedService$ConverterKeyToBinary.convert(PartitionedService.CDB:16)
     at com.tangosol.util.ConverterCollections$ConverterInvocableMap.invoke(ConverterCollections.java:2156)
     at com.tangosol.util.ConverterCollections$ConverterNamedCache.invoke(ConverterCollections.java:2622)
     at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache$ViewMap.invoke(PartitionedCache.CDB:11)
     at com.tangosol.coherence.component.util.SafeNamedCache.invoke(SafeNamedCache.CDB:1)
     at com.oracle.coherence.patterns.pushreplication.publishers.cache.AbstractCachePublisher.publishBatch(AbstractCachePublisher.java:142)
     ... 10 more
Caused by: java.io.StreamCorruptedException: invalid type: 169
     at com.tangosol.util.ExternalizableHelper.readObjectInternal(ExternalizableHelper.java:2265)
     at com.tangosol.util.ExternalizableHelper.readObject(ExternalizableHelper.java:2253)
     at com.tangosol.io.DefaultSerializer.deserialize(DefaultSerializer.java:74)
     at com.tangosol.util.ExternalizableHelper.deserializeInternal(ExternalizableHelper.java:2703)
     at com.tangosol.util.ExternalizableHelper.fromBinary(ExternalizableHelper.java:261)
     ... 16 more
2011-02-11 13:08:47.940/169.244 Oracle Coherence GE 3.6.1.1 <Error> (thread=Proxy:ExtendTcpProxyService:TcpAcceptor, member=1): Failed to publish EntryOperation{siteName=csfb.cs-group.com, clusterName=SPTestCluster, cacheName=source-cache, operation=Insert, publishableEntry=PublishableEntry{key=Binary(length=32, value=0x15A90F00004E07424F4F4B303038014E08494E535430393834024E0345535040), value=Binary(length=147, value=0x1281A30115AA0F0000A90F00004E07424F4F4B303038014E08494E535430393834024E03455350400248ADEEF99607060348858197BF22060448B4D8E9BE02060548A0D2CDC70E060648B0E9A2C4030607488DBCD6E50D060848B18FC1882006094E03303038402B155B014E0524737263244E1F637366622E63732D67726F75702E636F6D2D535054657374436C7573746572), originalValue=Binary(length=0, value=0x)}} to Cache passive-cache because of
(Wrapped) java.io.StreamCorruptedException: invalid type: 169 Class:com.oracle.coherence.patterns.pushreplication.publishers.cache.AbstractCachePublisher
2011-02-11 13:08:47.940/169.244 Oracle Coherence GE 3.6.1.1 <D5> (thread=Proxy:ExtendTcpProxyService:TcpAcceptor, member=1): An exception occurred while processing a InvocationRequest for Service=Proxy:ExtendTcpProxyService:TcpAcceptor: (Wrapped: Failed to publish a batch with the publisher [Active Publisher] on cache [source-cache]) java.lang.IllegalStateException: Attempted to publish to cache passive-cache
     at com.tangosol.util.Base.ensureRuntimeException(Base.java:293)
     at com.oracle.coherence.patterns.pushreplication.publishers.RemoteClusterPublisher$RemotePublishingAgent.run(RemoteClusterPublisher.java:348)
     at com.tangosol.coherence.component.net.extend.proxy.serviceProxy.InvocationServiceProxy.query(InvocationServiceProxy.CDB:6)
     at com.tangosol.coherence.component.net.extend.messageFactory.InvocationServiceFactory$InvocationRequest.onRun(InvocationServiceFactory.CDB:12)
     at com.tangosol.coherence.component.net.extend.message.Request.run(Request.CDB:4)
     at com.tangosol.coherence.component.net.extend.proxy.serviceProxy.InvocationServiceProxy.onMessage(InvocationServiceProxy.CDB:9)
     at com.tangosol.coherence.component.net.extend.Channel.execute(Channel.CDB:39)
     at com.tangosol.coherence.component.net.extend.Channel.receive(Channel.CDB:26)
     at com.tangosol.coherence.component.util.daemon.queueProcessor.service.Peer.onNotify(Peer.CDB:103)
     at com.tangosol.coherence.component.util.Daemon.run(Daemon.CDB:42)
     at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.IllegalStateException: Attempted to publish to cache passive-cache
     at com.oracle.coherence.patterns.pushreplication.publishers.cache.AbstractCachePublisher.publishBatch(AbstractCachePublisher.java:163)
     at com.oracle.coherence.patterns.pushreplication.publishers.RemoteClusterPublisher$RemotePublishingAgent.run(RemoteClusterPublisher.java:343)
     ... 9 more
Caused by: (Wrapped) java.io.StreamCorruptedException: invalid type: 169
     at com.tangosol.util.ExternalizableHelper.fromBinary(ExternalizableHelper.java:265)
     at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.PartitionedService$ConverterKeyToBinary.convert(PartitionedService.CDB:16)
     at com.tangosol.util.ConverterCollections$ConverterInvocableMap.invoke(ConverterCollections.java:2156)
     at com.tangosol.util.ConverterCollections$ConverterNamedCache.invoke(ConverterCollections.java:2622)
     at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache$ViewMap.invoke(PartitionedCache.CDB:11)
     at com.tangosol.coherence.component.util.SafeNamedCache.invoke(SafeNamedCache.CDB:1)
     at com.oracle.coherence.patterns.pushreplication.publishers.cache.AbstractCachePublisher.publishBatch(AbstractCachePublisher.java:142)
     ... 10 more
Caused by: java.io.StreamCorruptedException: invalid type: 169
     at com.tangosol.util.ExternalizableHelper.readObjectInternal(ExternalizableHelper.java:2265)
     at com.tangosol.util.ExternalizableHelper.readObject(ExternalizableHelper.java:2253)
     at com.tangosol.io.DefaultSerializer.deserialize(DefaultSerializer.java:74)
     at com.tangosol.util.ExternalizableHelper.deserializeInternal(ExternalizableHelper.java:2703)
     at com.tangosol.util.ExternalizableHelper.fromBinary(ExternalizableHelper.java:261)
     ... 16 more
It seems to be loading my POF configuration file - which also includes the standard Coherence ones as well as those required for PR - just fine, as you can see at the top of the trace.
Any ideas why POF format for my objects is giving this error (NB. I've tested the POF stuff outside of PR and it all works fine.)
EDIT: I've tried switching the "publisher" to the "file" publisher in PR. And that works fine. I see my POF format cached data extracted and published to the directory I specify. So the "publish" part seems to work when I use a file-publisher.
Cheers,
Steve

Hi Neville,
I don't pass any POF config parameters on the command-line. My POF file is called "pof-config.xml" so seems to be picked up by default. The trace I showed in my post shows the file being picked up.
My POF config file content is as follows:
<pof-config>
     <user-type-list>
          
          <include>coherence-pof-config.xml</include>
          
<include>coherence-common-pof-config.xml</include>
<include>coherence-messagingpattern-pof-config.xml</include>
<include>coherence-pushreplicationpattern-pof-config.xml</include>
          
          <user-type>
               <type-id>1001</type-id>
               <class-name>com.csg.gpc.domain.model.position.trading.TradingPositionKey</class-name>
               <serializer>
                    <class-name>com.csg.gpc.coherence.pof.position.trading.TradingPositionKeySerializer</class-name>
               </serializer>
          </user-type>
          <user-type>
               <type-id>1002</type-id>
               <class-name>com.csg.gpc.domain.model.position.trading.TradingPosition</class-name>
               <serializer>
                    <class-name>com.csg.gpc.coherence.pof.position.trading.TradingPositionSerializer</class-name>
               </serializer>
          </user-type>
          <user-type>
               <type-id>1003</type-id>
               <class-name>com.csg.gpc.domain.model.position.simple.SimplePosition</class-name>
               <serializer>
                    <class-name>com.csg.gpc.coherence.pof.position.simple.SimplePositionSerializer</class-name>
               </serializer>
          </user-type>
          <user-type>
               <type-id>1004</type-id>
               <class-name>com.csg.gpc.coherence.processor.TradingPositionUpdateProcessor</class-name>
          </user-type>
     </user-type-list>
</pof-config>
EDIT: I'm running both clusters here from within Eclipse. Here's the POF bits from the startup of the receiving cluster:
2011-02-11 15:05:22.607/2.328 Oracle Coherence GE 3.6.1.1 <D5> (thread=Invocation:Management, member=1): Service Management joined the cluster with senior service member 1
2011-02-11 15:05:22.779/2.500 Oracle Coherence GE 3.6.1.1 <Info> (thread=DistributedCache:DistributedCacheForSequenceGenerators, member=1): Loaded POF configuration from "file:/C:/wsgpc/GlobalPositionsCache/resource/coherence/pof-config.xml"
2011-02-11 15:05:22.779/2.500 Oracle Coherence GE 3.6.1.1 <Info> (thread=DistributedCache:DistributedCacheForSequenceGenerators, member=1): Loaded included POF configuration from "jar:file:/C:/coherence3.6/coherence/lib/coherence.jar!/coherence-pof-config.xml"
2011-02-11 15:05:22.779/2.500 Oracle Coherence GE 3.6.1.1 <Info> (thread=DistributedCache:DistributedCacheForSequenceGenerators, member=1): Loaded included POF configuration from "jar:file:/C:/coherence3.6-pushreplication/coherence-3.6-common-1.7.3.20019.jar!/coherence-common-pof-config.xml"
2011-02-11 15:05:22.779/2.500 Oracle Coherence GE 3.6.1.1 <Info> (thread=DistributedCache:DistributedCacheForSequenceGenerators, member=1): Loaded included POF configuration from "jar:file:/C:/coherence3.6-pushreplication/coherence-3.6-messagingpattern-2.7.4.21016.jar!/coherence-messagingpattern-pof-config.xml"
2011-02-11 15:05:22.779/2.500 Oracle Coherence GE 3.6.1.1 <Info> (thread=DistributedCache:DistributedCacheForSequenceGenerators, member=1): Loaded included POF configuration from "jar:file:/C:/coherence3.6-pushreplication/coherence-3.6-pushreplicationpattern-3.0.3.20019.jar!/coherence-pushreplicationpattern-pof-config.xml"
And here's the start-up POF bits from the sending cluster:
2011-02-11 15:07:09.744/2.343 Oracle Coherence GE 3.6.1.1 <D5> (thread=Invocation:Management, member=1): Service Management joined the cluster with senior service member 1
2011-02-11 15:07:09.916/2.515 Oracle Coherence GE 3.6.1.1 <Info> (thread=DistributedCache:DistributedCacheForSequenceGenerators, member=1): Loaded POF configuration from "file:/C:/wsgpc/GlobalPositionsCache/resource/coherence/pof-config.xml"
2011-02-11 15:07:09.916/2.515 Oracle Coherence GE 3.6.1.1 <Info> (thread=DistributedCache:DistributedCacheForSequenceGenerators, member=1): Loaded included POF configuration from "jar:file:/C:/coherence3.6/coherence/lib/coherence.jar!/coherence-pof-config.xml"
2011-02-11 15:07:09.916/2.515 Oracle Coherence GE 3.6.1.1 <Info> (thread=DistributedCache:DistributedCacheForSequenceGenerators, member=1): Loaded included POF configuration from "jar:file:/C:/coherence3.6-pushreplication/coherence-3.6-common-1.7.3.20019.jar!/coherence-common-pof-config.xml"
2011-02-11 15:07:09.916/2.515 Oracle Coherence GE 3.6.1.1 <Info> (thread=DistributedCache:DistributedCacheForSequenceGenerators, member=1): Loaded included POF configuration from "jar:file:/C:/coherence3.6-pushreplication/coherence-3.6-messagingpattern-2.7.4.21016.jar!/coherence-messagingpattern-pof-config.xml"
2011-02-11 15:07:09.916/2.515 Oracle Coherence GE 3.6.1.1 <Info> (thread=DistributedCache:DistributedCacheForSequenceGenerators, member=1): Loaded included POF configuration from "jar:file:/C:/coherence3.6-pushreplication/coherence-3.6-pushreplicationpattern-3.0.3.20019.jar!/coherence-pushreplicationpattern-pof-config.xml"
They both seem to be reading my pof-config.xml file.
I have the following in my sending cluster cache config:
          <sync:provider pof-enabled="true">
               <sync:coherence-provider />
          </sync:provider>
And this in the receiving cache config:
<introduce:config
file="coherence-pushreplicationpattern-pof-cache-config.xml" />
Cheers,
Steve
Edited by: stevephe on 11-Feb-2011 07:05

Why r we allowed to create String objects with & without using new operator

While creating any object, usage of the new operator is a must...but only for the string object we can create it with and also without new operator how is it possible to create an object without using new operator.

Because Mr. (Dr.?) Gosling is a kindly soul who realizes that programmers have deadlines and, when he designed Java, was not so rigid or unbending as not to realize that from time to time, certain shortcuts are warranted, even in a relatively pure language such as Java. The direct String literal assignments are a shortcut over using the new operator making Java programming (and execution; there's also a performance benefit) more streamlined.
So look not the gift horse in the mouth, but simply bask in the simplification and ease on the eyes and directly assign your little literals to your heart's content.

Error accesing/using a String object.......

Hi again folks!
Well now I have other problem, I don?t know what's happening, but I have simple C++ program as shared object which retrieves information from a Database, with the query results it makes a single string with all the data retrieved.
This C++ program is called by a Java program using JNI, but when my Java program receives the string and tries to parse it with the StringTokenizer object I get an error like this:
SIGSEGV 11* segmentation violation
si_signo [11]: SIGSEGV 11* segmentation violation
si_errno [0]: Error 0
si_code [1]: SEGV_ACCERR [addr: 0x45cb2448]
stackbase=DFFFF0A0, stackpointer=DFFFD0CC
Full thread dump:
"SIGQUIT handler" (TID:0xdd300190, sys_thread_t:0x42020, state:R, thread_t:
t@5, sp:0x0 threadID:0xdeaf0dd8, stack_base:0xdeaf0d6c, stack_size:0x20000) prio
=0
"Finalizer thread" (TID:0xdd3000d0, sys_thread_t:0x41fb8, state:CW, thread_t
: t@4, sp:0x0 threadID:0xdebb0dd8, stack_base:0xdebb0d6c, stack_size:0x20000) pr
io=1
"main" (TID:0xdd3000a8, sys_thread_t:0x42908, state:R, thread_t: t@1, sp:0x0
threadID:0x20a18, stack_base:0xdffff0a0, stack_size:0x800000) prio=5 *current t
hread*
ObjectFactory.createObject(Compiled Code)
Test.main(Compiled Code)
Registered Monitor Dump:
PCMap lock: <unowned>
Thread queue lock: <unowned>
Name and type hash table lock: <unowned>
String intern lock: <unowned>
JNI pinning lock: <unowned>
JNI global reference lock: <unowned>
BinClass lock: <unowned>
Class loading lock: owner "main" (0x42908, 1 entry)
Java stack lock: <unowned>
Code rewrite lock: <unowned>
Heap lock: <unowned>
Has finalization queue lock: <unowned>
Finalize me queue lock: <unowned>
Waiting to be notified:
"Finalizer thread"
Monitor cache expansion lock: <unowned>
Monitor registry: owner "main" (0x42908, 1 entry)
Abort (core dumped)
I dont know if I have to do something special before use the String, what's happening?
Any comment will be welcome.
Thanks in advance.

I hope this could help to clarify the scenario
In a previous query I get the number of rows returned by the next query
this number is stored at SQL_NUM_SEGS.arr variable. When I have the number of rows I reserve memory for the char array that I'm going to return with all the information.
AC01_TRAMA=(char *)malloc(atol(SQL_NUM_SEGS.arr) * INT02_TAM_SEG);
/*embedded PL/SQL code*/
EXEC SQL DECLARE CUR_EMISORA CURSOR FOR
SELECT rtrim(to_char(NUM_EMISORA)) || '|' || rtrim(SERIE) || '|' || EMISORA || '|' || STATUS FROM NUCL_EMISORA WHERE STATUS NOT LIKE 'BAJA';
EXEC SQL OPEN CUR_EMISORA;
The next lines of code generate a string like this:
"UTIL0000|366|239|93-1|FINASA |VIGE|243|3-90|BONSER |VIGE|248|2-94|BONSER |VIGE|287|970403|GOBFED |VIGE|362|93-4|BANOBRA |VIGE|404|2-90|BONSER |VIGE|407|2-95|FINASA |VIGE|633|95|BANMEXI |VIGE|641|2-94|PROMEX |VIGE|645|1-95|FINASA |VIGE|647|1-96|FINASA |VIGE|660|92|BANORTE |VIGE|677|93-3|BANOBRA |VIGE|678|1-90|BIATLAN |VIGE|736|2-95|BONSER |VIGE|786|1-94|BNCI |VIGE|1007|021024|GOBFED |VIGE|1008|021121|GOBFED |VIGE|"
this string is assigned to AC01_TRAMA(char pointer)and then I return this string in the next way:
return ( (env)->NewStringUTF(AC01_TRAMA) );
My java program is this:
public class Monitor
public native String consultaGeneral();
static
System.load("/afs/invermexico.com.mx/usr2/salponce/gustavo/jni/src_db/Monitor.so");
public String getTrama()
     String strTrama=consultaGeneral();
return strTrama;
public static void main(String []args)
String strEmisora, strNumEmisora, strStatus,strSerie;
Monitor m=new Monitor();
System.out.println(m.getTrama());
/*java.util.StringTokenizer STk = new java.util.StringTokenizer(m.getTrama(),"|");
while(objSTk.hasMoreTokens())
strEmisora = objSTk.nextToken();
strNumEmisora = objSTk.nextToken();
strStatus = objSTk.nextToken();
strSerie = objSTk.nextToken();
System.out.println("\n<------>\n"+ strEmisora+"\n"+strNumEmisora+"\n"+strStatus+"\n"+strSerie);
}//while
Well, this java program works fine but if I try to create an String tokenizer with it the program crashes, even if I assign the result into a new String object.
I'm going to put all the code rigth here
C++ program
#include "ast_bd.h"
#include "Monitor.h"
#include <stdlib.h>
#include <stdio.h>
#include <strings.h>
#include <jni.h>
#define CHA01_NOMBRE_APP "UTIL0000"
#define CHA02_FIN_DE_SEG "|"
#define INT01_TAM_LONG 20
#define INT02_TAM_SEG 52 /*52 BYTES; Tama�o de los 4 datos en conjunto*/
Prop�sito :-Determinar cuales son las emisoras con estado de vigente
o bloqueado.
-Obtener los datos de una emisora espec�fica.
-Actualizar los datos de una emisora espec�fica.
JNIEXPORT jstring JNICALL Java_Monitor_consultaGeneral
(JNIEnv *env, jobject obj)
long LO01_STATUS=1;
char CH01_NUM_SEGS[INT01_TAM_LONG];
char AC01_TRAMA, AC02_SEG;
EXEC SQL BEGIN DECLARE SECTION;
VARCHAR SQL_NUM_SEGS[INT01_TAM_LONG],
SQL_RESULT[INT02_TAM_SEG];
EXEC SQL END DECLARE SECTION;
EXEC SQL WHENEVER SQLERROR CONTINUE;
open_db();
EXEC SQL SELECT to_char(COUNT(1)) INTO:SQL_NUM_SEGS FROM NUCL_EMISORA WHERE STATUS NOT LIKE 'BAJA';
LO01_STATUS = sqlca.sqlcode;
if( !LO01_STATUS ) /*si todo sali� bien*/
strcpy(CH01_NUM_SEGS,SQL_NUM_SEGS.arr);
CH01_NUM_SEGS[SQL_NUM_SEGS.len]='\0';
AC01_TRAMA=(char *)malloc(atol(SQL_NUM_SEGS.arr) * INT02_TAM_SEG);
sprintf(AC01_TRAMA,"%s|%s|\0", CHA01_NOMBRE_APP, CH01_NUM_SEGS);
EXEC SQL DECLARE CUR_EMISORA CURSOR FOR
SELECT rtrim(to_char(NUM_EMISORA)) || '|' || rtrim(SERIE) || '|' || EMISORA || '|' || STATUS FROM NUCL_EMISORA WHERE STATUS NOT LIKE 'BAJA';
EXEC SQL OPEN CUR_EMISORA;
LO01_STATUS = sqlca.sqlcode;
if( !LO01_STATUS ) /*si todo sali� bien*/
do
EXEC SQL FETCH CUR_EMISORA INTO :SQL_RESULT;
LO01_STATUS = sqlca.sqlcode;/*Recuperamos el estado de la operacion fetch*/
if( !LO01_STATUS )
AC02_SEG=(char *)malloc(SQL_RESULT.len);
strcpy(AC02_SEG,SQL_RESULT.arr);
AC02_SEG[SQL_RESULT.len]='\0';
strcat(AC01_TRAMA,AC02_SEG);
strcat(AC01_TRAMA,CHA02_FIN_DE_SEG);
}/*if fetch correcto*/
else
LO01_STATUS=1;
}while(!LO01_STATUS);
EXEC SQL CLOSE CUR_EMISORA;/*Cerramos el cursor*/
Si no se recuperaron registros, se indicara en el numero de segmentos
al inicio de la trama.
}/*if open cursor*/
}/*if conteo*/
puts(AC01_TRAMA);
return ( (env)->NewStringUTF(AC01_TRAMA) );
}/*consulta_general*/
Java programs
public class Monitor
public native String consultaGeneral();
static
System.load("/afs/invermexico.com.mx/usr2/salponce/gustavo/jni/src_db/Monitor.so");
public String getTrama()
     String strTrama=consultaGeneral();
return strTrama;
public static void main(String []args)
String strEmisora, strNumEmisora, strStatus,strSerie;
Monitor m=new Monitor();
System.out.println(m.getTrama());
/*java.util.StringTokenizer STk = new java.util.StringTokenizer(m.getTrama(),"|");
while(objSTk.hasMoreTokens())
strEmisora = objSTk.nextToken();
strNumEmisora = objSTk.nextToken();
strStatus = objSTk.nextToken();
strSerie = objSTk.nextToken();
System.out.println("\n<------>\n"+ strEmisora+"\n"+strNumEmisora+"\n"+strStatus+"\n"+strSerie);
}//while
Thank's

Issue with internal table in object oriented ABAP.

Hello Gurus,
I am having trouble defining internal table in Object oriented ABAP. for following:
DATA: BEGIN OF IT_TAB OCCURS 0.
        INCLUDE STRUCTURE ZCUSTOM.
DATA    tot_sum   TYPE char40.
DATA END OF IT_TAB.
Can someone help ?
Regards,
Jainam.
Edited by: Jainam Shah on Feb 5, 2010 8:33 PM
Edited by: Jainam Shah on Feb 5, 2010 8:33 PM
Moderator message - Please post in the correct forum. You can easily find out for yourself by looking at SAP help for internal tables using OOP - thread locked
Edited by: Rob Burbank on Feb 5, 2010 2:49 PM

No, you can not declare internal table with header line in OO context. You have to declare the work are/header line separately
Example:
TYPES: BEGIN OF ty_it_tab.
        INCLUDE STRUCTURE mara.
TYPES: tot_sum TYPE char40.
TYPES: END OF ty_it_tab.
DATA: it_tab TYPE STANDARD TABLE OF ty_it_tab.
DATA: wk_tab TYPE ty_it_tab.
LOOP AT it_tab INTO wk_tab.
ENDLOOP.
Edited by: Dean Q on Feb 5, 2010 8:50 PM

Why not use "new" operator with strings

why we not use new when declaring a String .because in java String are treated as objects. we use new operator for creating an object in java .
and same problem wiht array when we declare array as well as initialize .here we are alse not using new for array
why

Strings aren't just treated as objects, Strings are Objects.
As for why not using new for Strings, you can, if you want.:
String str = "this is a string";
and
String str = new String("this is a string");
do the same thing (nitty-gritty low level details about literals aside). Use whatever you like, but isn't it simpler not to type new String(...) since you still need to type the actual string?
As for arrays, you can use new:
int[] ints = new int[10];
or
int[] ints = { 0, 1, 2, 3, ..., 9 };
But the difference here is you are creating an empty array in the first one, the second creates and fills the array with the specified values. But which to you often depends on what you are doing.

Using intern() with String objects

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