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Thread: Error: Could not find or load main class

  1. #1
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    Post Error: Could not find or load main class

    Dear Sir,


    i am trying execute java batch programs.

    program successfully compiled using netbeans ide.


    but i am trying to run that through command line

    this is my classpath:

    set classLogPath=D:\Apps\AttendanceBatch\CGS_Attendanc e\logs\
    set batchJarPath=D:\Apps\AttendanceBatch\CGS_Attendanc e\jarFiles\
    set classpath=%batchJarPath%mysql-connector-java-5.0.8-bin.jar;.;%batchJarPath%CGSBatch.jar;
    java -cp %classpath% com.ets.to.batch.attendance.main.ProcessAttendance Main>>%classLogPath%processAttendance.log;


    Command line through the error:

    D:\Apps\AttendanceBatch\CGS_Attendance>Processatte ndance.bat

    D:\Apps\AttendanceBatch\CGS_Attendance>set classLogPath=D:\Apps\AttendanceBatch\
    CGS_Attendance\logs\

    D:\Apps\AttendanceBatch\CGS_Attendance>set batchJarPath=D:\Apps\AttendanceBatch\
    CGS_Attendance\jarFiles\

    D:\Apps\AttendanceBatch\CGS_Attendance>set classpath=D:\Apps\AttendanceBatch\CGS
    _Attendance\jarFiles\mysql-connector-java-5.0.8-bin.jar;.;D:\Apps\AttendanceBatc
    h\CGS_Attendance\jarFiles\CGSBatch.jar;

    D:\Apps\AttendanceBatch\CGS_Attendance>java -cp D:\Apps\AttendanceBatch\CGS_Atte
    ndance\jarFiles\mysql-connector-java-5.0.8-bin.jar;.;D:\Apps\AttendanceBatch\CGS
    _Attendance\jarFiles\CGSBatch.jar; com.ets.to.batch.attendance.main.ProcessAtten
    danceMain; 1>>D:\Apps\AttendanceBatch\CGS_Attendance\logs\pro cessAttendance.log

    Error: Could not find or load main class com.ets.to.batch.attendance.main.Proces
    sAttendanceMain;
    D:\Apps\AttendanceBatch\CGS_Attendance>





    How to fix it please help.

    i have set both java classpath and path.
    my java version is jdk1.7.


  2. #2
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    Default Re: Error: Could not find or load main class

    Useful links: How to Ask Questions the Smart Way | Use Code Tags | Java Tutorials
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    Default Re: Error: Could not find or load main class

    What is a java batch file? Do you mean the java source file?

    Since it compiles and runs in Netbeans, the problem is probably with your file structure, the directory you're in when issuing the command at the command line, and the command you're using. If your source file includes a package statement, the problem is more complicated but still solvable. Hopefully, the link Mr. Workman provided will give you some clues how to fix those relatively minor problems.

    Good luck.

  4. #4
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    Default Re: Error: Could not find or load main class

    Hello.
    Try removing the last semicolon in the third and fourth statements and execute again.
    Let me know if the errors still persist.

    Syed.

    --- Update ---

    Hello.
    I just checked. I believe there is no issues with semicolons as I said earlier.
    What I suggest is all the jar files you added in the netbeans project should be provided on the system variable "CLASSPATH".
    Then create jar file for each package you have defined.
    Add all these jars as well onto the "CLASSPATH".
    Then execute "java" command and provide the fully qualified name of the main class.

    Syed.

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