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Thread: Exception in thread "main" java.lang.NoSuchMethodError: main?

  1. #1
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    Question Exception in thread "main" java.lang.NoSuchMethodError: main?

    Hello Friends,

    I am beginner of java.
    here i am facing run time exception for code
    snippet which i am pasting here,please help me on this issue.

     
    class Operation
    {
    int square(int n)
    {
    return n*n;
    }
    }
     
     
    class Circle
    {
    Operation op;
    double pi=3.14;
     
    double area(int radius)
    {
    op=new Operation();
    int rsquare=op.square(radius);
    return pi*rsquare;
    }
     
    public static void main(String args[])
    {
    Circle c = new Circle();
    double result = c.area(5);
     
    System.out.println(result);
    }
    }

    Regards
    Sk.


  2. #2
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    Default Re: Exception in thread "main" java.lang.NoSuchMethodError: main?

    Please post the full text of the error message, and show us exactly which line is throwing the Exception (since line numbers on the forum might not be the line numbers on your machine).
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    Default Re: Exception in thread "main" java.lang.NoSuchMethodError: main?

    Hello,

    The problem has sorted out by my own,
    thanks for reply.
    i am facing problem in another source code here as

    class Simple2
    {
    public static void main(String args[])
    {
    String s ="Altaf";
    s.concat(" Shikalgar");
    System.out.println(s);
    }
    }

    it gives error as
    [Simple2.java:3: cannot access String
    bad class file : .\String.java
    file does not contain class String
    Please remove or make sure it appears in the correct sub directory of class path. ]

  4. #4
    Crazy Cat Lady KevinWorkman's Avatar
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    Default Re: Exception in thread "main" java.lang.NoSuchMethodError: main?

    Did you create a new class named String? If so, rename it.

    What version of Java are you running? How are you compiling this?
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