NullPointerException when using Comparator. help

Discussion in 'Java' started by anonaki, Sep 6, 2003.

  1. anonaki

    anonaki Guest

    Why does the code below throw a java.lang.NullPointerException?? The
    two objects being compared obviously don't become Null references.
    any help would be greatly appreciated.

    import java.util.*;

    class test3
    public static void main( String [] args )
    Object obj1 = new Integer( 1 );
    Object obj2 = new Integer( 2 );

    if ( obj1 ,obj2 ) == 0 )
    System.out.println( "They are Equal" );

    static Comparator cmp;
    anonaki, Sep 6, 2003
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  2. You have a reference to a Comparator, but no Comparator for it to
    refer to. You'll want to have cmp = new Comparator() or something like
    that somewhere.
    /-- Joona Palaste () ---------------------------\
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    Joona I Palaste, Sep 6, 2003
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  3. anonaki

    anonaki Guest

    I got it
    anonaki, Sep 8, 2003
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