Not able to run java programs

Exception in thread "main" java.lang.NoClassDefFoundError. I have set the path and classpath but in user variables. And defined main in my programs. But programs are only compiling not running.
Please suggest me.
What do I do?
Edited by: Ram-Murthy on Apr 10, 2008 2:23 AM

Make sure your main is static.
public static void main(String [] args) {}

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Process:
Python [1230]
Path:
/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/ MacOS/Python
Identifier:
Python
Version:
2.7.4 (2.7.4)
Code Type:
X86-64 (Native)
Parent Process: bash [883]
Responsible:
Terminal [749]
User ID:
501
Date/Time:
2015-01-15 09:46:08.784 +0530
OS Version:
Mac OS X 10.9.2 (13C64)
Report Version: 11
Anonymous UUID: A975CB81-1635-0611-4AD9-0DC61C4EC9A0
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000
VM Regions Near 0:
-->
__TEXT
0000000100000000-0000000100001000 [
4K] r-x/rwx SM=COW /Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents /MacOS/Python
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   readline.so
0x00000001002f2f97 call_readline + 647
1   org.python.python
0x0000000100008e92 PyOS_Readline + 274
2   org.python.python
0x000000010000a6e8 tok_nextc + 104
3   org.python.python
0x000000010000ae93 PyTokenizer_Get + 147
4   org.python.python
0x0000000100005a8a parsetok + 218
5   org.python.python
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6   org.python.python
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7   org.python.python
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8   org.python.python
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9   org.python.python
0x000000010010155d Py_Main + 3101
10 org.python.python
0x0000000100000f14 0x100000000 + 3860
Thread 0 crashed with X86 Thread State (64-bit):
rax: 0x0000000000000000 rbx: 0x0000000100322290 rcx: 0x0000000102000000 rdx: 0x0000000000000a00
rdi: 0x0000000000000000 rsi: 0x00000001002f3254 rbp: 0x00007fff5fbff2d0 rsp: 0x00007fff5fbff200
   r8: 0x0000000102000000   r9: 0x0000000000000000 r10: 0x0080002140000003 r11: 0x0000000000000001
r12: 0x0000000000000001 r13: 0x0000000000000009 r14: 0x00007fff5fbff290 r15: 0x00007fff5fbff210
rip: 0x00000001002f2f97 rfl: 0x0000000000010206 cr2: 0x0000000000000000
Logical CPU:
1
Error Code:
0x00000004
Trap Number:
14
Binary Images:
0x100000000 -
0x100000fff +org.python.python (2.7.4 - 2.7.4) <A450FF23-FAE2-B1D7-E70F-5511C3FAD379> /Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents /MacOS/Python
0x100003000 -
0x10016fff7 +org.python.python (2.7.4, [c] 2004-2013 Python Software Foundation. - 2.7.4) <D4B4F67F-D7AA-AECF-2E7C-6C605A9B1EA9> /Library/Frameworks/Python.framework/Versions/2.7/Python
0x1002f1000 -
0x1002f3fff +readline.so (???) <CDBF1919-7992-8A7E-5F30-D429DB67EF51> /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/rea dline.so
0x100700000 -
0x10071effb libedit.2.dylib (39) <1B0596DB-F336-32E7-BB9F-51BF70DB5305> /usr/lib/libedit.2.dylib
0x10072f000 -
0x100783fe7 +libncursesw.5.dylib (5) <3F0079C0-01C1-3CB8-19CA-F9B49AA4F4A4> /Library/Frameworks/Python.framework/Versions/2.7/lib/libncursesw.5.dylib
0x7fff64d5d000 -
0x7fff64d90817 dyld (239.4) <2B17750C-ED1B-3060-B64E-21897D08B28B> /usr/lib/dyld
0x7fff88329000 -
0x7fff8833aff7 libsystem_asl.dylib (217.1.4) <655FB343-52CF-3E2F-B14D-BEBF5AAEF94D> /usr/lib/system/libsystem_asl.dylib
0x7fff8833b000 -
0x7fff88340ff7 libunwind.dylib (35.3) <78DCC358-2FC1-302E-B395-0155B47CB547> /usr/lib/system/libunwind.dylib
0x7fff88b16000 -
0x7fff88b3dff7 libsystem_network.dylib (241.3) <8B1E1F1D-A5CC-3BAE-8B1E-ABC84337A364> /usr/lib/system/libsystem_network.dylib
0x7fff88b3e000 -
0x7fff88b5aff7 libsystem_kernel.dylib (2422.90.20) <20E00C54-9222-359F-BD98-CB79ABED769A> /usr/lib/system/libsystem_kernel.dylib
0x7fff88de4000 -
0x7fff88e14fff libncurses.5.4.dylib (42) <BF763D62-9149-37CB-B1D2-F66A2510E6DD> /usr/lib/libncurses.5.4.dylib
0x7fff88e15000 -
0x7fff88e1bff7 libsystem_platform.dylib (24.90.1) <3C3D3DA8-32B9-3243-98EC-D89B9A1670B3> /usr/lib/system/libsystem_platform.dylib
0x7fff88e8c000 -
0x7fff88ea7ff7 libsystem_malloc.dylib (23.10.1) <A695B4E4-38E9-332E-A772-29D31E3F1385> /usr/lib/system/libsystem_malloc.dylib
0x7fff891a9000 -
0x7fff891f7fff libcorecrypto.dylib (161.1) <F3973C28-14B6-3006-BB2B-00DD7F09ABC7> /usr/lib/system/libcorecrypto.dylib
0x7fff892a2000 -
0x7fff892acfff libcommonCrypto.dylib (60049) <8C4F0CA0-389C-3EDC-B155-E62DD2187E1D> /usr/lib/system/libcommonCrypto.dylib
0x7fff892c0000 -
0x7fff89312fff libc++.1.dylib (120) <4F68DFC5-2077-39A8-A449-CAC5FDEE7BDE> /usr/lib/libc++.1.dylib
0x7fff8a0de000 -
0x7fff8a105ffb libsystem_info.dylib (449.1.3) <7D41A156-D285-3849-A2C3-C04ADE797D98> /usr/lib/system/libsystem_info.dylib
0x7fff8b079000 -
0x7fff8b080fff libcompiler_rt.dylib (35) <4CD916B2-1B17-362A-B403-EF24A1DAC141> /usr/lib/system/libcompiler_rt.dylib
0x7fff8b081000 -
0x7fff8b082ffb libremovefile.dylib (33) <3543F917-928E-3DB2-A2F4-7AB73B4970EF> /usr/lib/system/libremovefile.dylib
0x7fff8b083000 -
0x7fff8b23bff3 libicucore.A.dylib (511.31) <167DDD0A-A935-31AF-B5B9-940268EC3A3C> /usr/lib/libicucore.A.dylib
0x7fff8bb00000 -
0x7fff8bb2ffd2 libsystem_m.dylib (3047.16) <B7F0E2E4-2777-33FC-A787-D6430B630D54> /usr/lib/system/libsystem_m.dylib
0x7fff8c3a5000 -
0x7fff8c3a6ff7 libsystem_blocks.dylib (63) <FB856CD1-2AEA-3907-8E9B-1E54B6827F82> /usr/lib/system/libsystem_blocks.dylib
0x7fff8cd63000 -
0x7fff8cd65ff7 libquarantine.dylib (71) <7A1A2BCB-C03D-3A25-BFA4-3E569B2D2C38> /usr/lib/system/libquarantine.dylib
0x7fff8d8fa000 -
0x7fff8d923ff7 libc++abi.dylib (49.1) <21A807D3-6732-3455-B77F-743E9F916DF0> /usr/lib/libc++abi.dylib
0x7fff8dbcc000 -
0x7fff8dbd3ff7 libsystem_pthread.dylib (53.1.4) <AB498556-B555-310E-9041-F67EC9E00E2C> /usr/lib/system/libsystem_pthread.dylib
0x7fff8dbfb000 -
0x7fff8dbffff7 libcache.dylib (62) <BDC1E65B-72A1-3DA3-A57C-B23159CAAD0B> /usr/lib/system/libcache.dylib
0x7fff8ddf9000 -
0x7fff8de00ff8 liblaunch.dylib (842.90.1) <38D1AB2C-A476-385F-8EA8-7AB604CA1F89> /usr/lib/system/liblaunch.dylib
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0x7fff8de43ff7 libauto.dylib (185.5) <F45C36E8-B606-3886-B5B1-B6745E757CA8> /usr/lib/libauto.dylib
0x7fff8de4d000 -
0x7fff8de51ff7 libsystem_stats.dylib (93.90.3) <1A55AF8A-B6C4-3163-B557-3AD25DA643A8> /usr/lib/system/libsystem_stats.dylib
0x7fff8ecd8000 -
0x7fff8eebdfff com.apple.CoreFoundation (6.9 - 855.14) <617B8A7B-FAB2-3271-A09B-C542E351C532> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
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0x7fff90c8b000 -
0x7fff90c8cff7 libDiagnosticMessagesClient.dylib (100) <4CDB0F7B-C0AF-3424-BC39-495696F0DB1E> /usr/lib/libDiagnosticMessagesClient.dylib
0x7fff91b4f000 -
0x7fff91b54fff libmacho.dylib (845) <1D2910DF-C036-3A82-A3FD-44FF73B5FF9B> /usr/lib/system/libmacho.dylib
0x7fff91c4e000 -
0x7fff91c55ff3 libcopyfile.dylib (103) <5A881779-D0D6-3029-B371-E3021C2DDA5E> /usr/lib/system/libcopyfile.dylib
0x7fff91d91000 -
0x7fff91e1aff7 libsystem_c.dylib (997.90.3) <6FD3A400-4BB2-3B95-B90C-BE6E9D0D78FA> /usr/lib/system/libsystem_c.dylib
0x7fff91e6e000 -
0x7fff91e77ff3 libsystem_notify.dylib (121) <52571EC3-6894-37E4-946E-064B021ED44E> /usr/lib/system/libsystem_notify.dylib
0x7fff9272c000 -
0x7fff9272dff7 libsystem_sandbox.dylib (278.11) <5E5A6E09-33A9-391A-AB34-E57D93BB1551> /usr/lib/system/libsystem_sandbox.dylib
0x7fff92ede000 -
0x7fff92f02fff libxpc.dylib (300.90.2) <AB40CD57-F454-3FD4-B415-63B3C0D5C624> /usr/lib/system/libxpc.dylib
0x7fff93601000 -
0x7fff93602ff7 libSystem.B.dylib (1197.1.1) <BFC0DC97-46C6-3BE0-9983-54A98734897A> /usr/lib/libSystem.B.dylib
0x7fff9363c000 -
0x7fff937e9f27 libobjc.A.dylib (551.1) <AD7FD984-271E-30F4-A361-6B20319EC73B> /usr/lib/libobjc.A.dylib
0x7fff93b8e000 -
0x7fff93b8eff7 libkeymgr.dylib (28) <3AA8D85D-CF00-3BD3-A5A0-E28E1A32A6D8> /usr/lib/system/libkeymgr.dylib
0x7fff949e8000 -
0x7fff949ebff7 libdyld.dylib (239.4) <CF03004F-58E4-3BB6-B3FD-BE4E05F128A0> /usr/lib/system/libdyld.dylib
0x7fff94df0000 -
0x7fff94df2ff3 libsystem_configuration.dylib (596.13) <B51C8C22-C455-36AC-952D-A319B6545884> /usr/lib/system/libsystem_configuration.dylib
0x7fff95357000 -
0x7fff95358fff libunc.dylib (28) <62682455-1862-36FE-8A04-7A6B91256438> /usr/lib/system/libunc.dylib
0x7fff95380000 -
0x7fff95391ff7 libz.1.dylib (53) <42E0C8C6-CA38-3CA4-8619-D24ED5DD492E> /usr/lib/libz.1.dylib
0x7fff95392000 -
0x7fff953acfff libdispatch.dylib (339.90.1) <F3CBFE1B-FCE8-3F33-A53D-9092AB382DBB> /usr/lib/system/libdispatch.dylib
External Modification Summary:
Calls made by other processes targeting this process:
task_for_pid: 0
thread_create: 0
thread_set_state: 0
Calls made by this process:
task_for_pid: 0
thread_create: 0
thread_set_state: 0
Calls made by all processes on this machine:
task_for_pid: 1192
thread_create: 0
thread_set_state: 0
VM Region Summary:
ReadOnly portion of Libraries: Total=76.9M resident=147.6M(192%) swapped_out_or_unallocated=16777216.0T(22877170565120%)
Writable regions: Total=46.0M written=2644K(6%) resident=3112K(7%) swapped_out=0K(0%) unallocated=42.9M(93%)
REGION TYPE
VIRTUAL
===========
=======
Kernel Alloc Once
4K
MALLOC
37.6M
MALLOC (admin)
16K
STACK GUARD
56.0M
Stack
8192K
VM_ALLOCATE
8K
__DATA
1432K
__LINKEDIT
66.2M
__TEXT
10.7M
__UNICODE
544K
shared memory
4K
===========
=======
TOTAL
180.5M
Model: MacBookPro9,2, BootROM MBP91.00D3.B06, 2 processors, Intel Core i5, 2.5 GHz, 4 GB, SMC 2.2f38
Graphics: Intel HD Graphics 4000, Intel HD Graphics 4000, Built-In, 1024 MB
Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1600 MHz, 0x02FE, 0x45424A3230554638424455302D474E2D4620
Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1600 MHz, 0x02FE, 0x45424A3230554638424455302D474E2D4620
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xF5), Broadcom BCM43xx 1.0 (5.106.98.100.22)
Bluetooth: Version 4.2.3f10 13477, 3 services, 15 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: APPLE HDD HTS547550A9E384, 500.11 GB
Serial ATA Device: HL-DT-ST DVDRW GS31N
USB Device: Hub
USB Device: Android
USB Device: FaceTime HD Camera (Built-in)
USB Device: Hub
USB Device: Hub
USB Device: IR Receiver
USB Device: Apple Internal Keyboard / Trackpad
USB Device: BRCM20702 Hub
USB Device: Bluetooth USB Host Controller
Thunderbolt Bus: MacBook Pro, Apple Inc., 25.1
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import java.io.IOException;
class RunTime
public static void main(String raja[])
Runtime r = Runtime.getRuntime();
Process p;
String[] commands = { "notepad","calcic","mspaint"};
System.out.println("Executing processes please wait........");
try
int commandslength = commands.length;
for(int i = 0 ; i < commandslength ; i++)
p = r.exec("commands");
catch(Exception e)
System.out.println("Cant proceed furthur ..");

Instead ofp = r.exec("commands");dop = r.exec(commands);Next time please paste your code between [code] tags with the help of the code button just above the edit message area.
It makes the code MUCH more readable.
Regards

I'm not able to run a simple Hello Program in java

I have just now installed jdk 1.3.1_2.
I have set the path and class path.
I'm able to compile the class without any errors but am not able to run the program.
when i say java Hello(after compiling Hello.java), i'm seeing the following error:
Exception in thread "main" java.lang.NoclassDefFoundError:Hello
Thanks in advance in this regard

Hmm..
Okay.. set aside any import or package stuffs.. lets say about a simple HelloWorld program which is called Hello.class. It resides in c:\, which means the full path is c:\Hello.class.
Make sure you got one of your path as c:\jdk1.3\bin(assuming you are using jdk 1.3).
If you are in the same directory as Hello.class, which is c:\>, you can execute the class file by typing:
C:\>java Hello
If you are not in the same directory and you wishes to run the class file, example you are in directory temp now:
C:\Temp>java -cp C:\ Hello
So the cp set will be just c:\. Hope that answers your question somehow.. well... if I never intepret it wrongly.

I am not able to run the java Program

Hi All,
I am not able to run a java program... I am able to complie the program sucessfully when i am trying to run it i am getting a error:
Exception in thread "main" java.lang.NoClassFoundError : filename
i have complie and run my programs frequently but now i am not able run my prevoius examples also ...
Can u any body help me out...... I have also update the latest version of JRE but still my problem is not sloved.
Thanks & Regards,
Ravi

Make sure you take package structure into account.
If you have say
package testing.things;
public class Test
public static void main(String[] args)
System.out.println("World Hello");
}in file Test.java, you compile it with (assuming your current working directory is at the folder in which the source file is located).
javac -d . Test.javaand run it with
java testing.things.TestThe -d . option creates the output at the current directory (with a folder structure matching your package structure).
#

Am not able to run the java program - pls help

1. I installed java in the below path
     c:\program files\java\jdk1.5.0
     c:\program files\java\jre1.5.0
I set the path in
     User variable i. variable name: path
          ii. variable value: c:\program files\java\jdk1.5.0\bin
when I compile it in command prompt-applying javac ? it performed successfully-shows
options like ?g create all debug info, -g : new Generate no debug info etc.,
But am not able to run the file. It shows error msg.
2. I specified the same name for file name & class name.
3. Java <class name>
     Exception in thread ?main?java.lang.NoclassDeffoundError: <class name>
4. Java ?cp <class name>
     Unrecognized option: -cp.<classname>
     Could not create the Java Virtual Machine
5. Java ?classpath . <classname>
     Exception in thread ?main?.java.lang.unsupported classversionError: <classname>
     <unsupported major.minor version 49.0
          at java.lang.classloader.defineclass0<native method>
          at java.lang.classloader.defineclass<unknown source>
               --and many listed below?
6. Java ?classpath c:\program files\java\jdk1.5.0\bin <class name>
     Exception in thread ?main?java.lang.NoclassDeffoundError: <class name>
7. I re-installed the java, but still the problem continuing.
pls help... its very urgent

Is the java class you compiled/calling in the default package? If it is not, you will have to call it by the fully qualified name.
e.g.
package com.mycompany.myproject;
public class MyClass {
    public static void main(String[] args) { }
}This would be called as "Java com.mycompany.myproject.MyClass" and must contain a main method with signature as above.
You would have to call this from folder where the compiled classes are located. If using package, you would call from directory at level of top most package so com folder in this example as Java will look at each package name in qualified name and try to traverse directories with those same names to get to .class file matching class name specified. To avoid this, your newly compiled .class files must also be in your classpath.
Hopefully that helps.
--Kevin

I have followed the Apple Support instructions I did it 3 times and this message always appear: "The program can't start because MSVCR80.dll is missing from your computer" and 'Error 7' but still not able to run iTunes. Anyone have a suggestion... Please!

I have followed the Apple Support instructions but these 2 errors always appear: "The program can't start because MSVCR80.dll is missing from your computer" and 'Error 7' but still not able to run iTunes. Anyone have a suggestion?

Try completely removing and reinstalling iTunes and all related components; you may need to do this multiple times. It won't normally affect the iTunes library, but that should be backed up anyway.
(99331)

TS5376 I have followed the instructions re these 2 errors "The program can't start because MSVCR80.dll is missing from your computer" but still not able to run iTunes. Anyone have a suggestion?

I have followed the Apple Support instructions re these 2 errors "The program can't start because MSVCR80.dll is missing from your computer" and 'Error 7' but still not able to run iTunes. Anyone have a suggestion?

Try completely removing and reinstalling iTunes and all related components; you may need to do this multiple times. It won't normally affect the iTunes library, but that should be backed up anyway.
(99328)

Not able to run java programs

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