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POBehavior of method overloading with varargs
 

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  1. POBehavior of method overloading with varargs
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    <p>I have two overloaded methods with varargs int and long. When I run a test passing integer it seems to prefer the varargs long method. Whereas, if I make the methods static and run with an integer it seems to prefer the varargs int method. What's going on here?</p> <pre><code>void varargs(int... i){ System.out.println("Inside int varargs"); for(int x : i) System.out.println(x); } void varagrs(long... l){ System.out.println("Inside long varargs"); for(long x : l) System.out.println(x); } static void staticvarargs(int...i) { System.out.println("Inside static int varargs"); for(int x : i) System.out.println(x); } static void staticvarargs(long...l) { System.out.println("Inside static long varargs"); for(long x : l) System.out.println(x); } public static void main(String args[]){ VarArgs va = new VarArgs(); va.varagrs(1); staticvarargs(1); } </code></pre> <p>Output:</p> <p>Inside long varargs 1</p> <p>Inside static int varargs 1</p> <p>EDIT: I should've chosen better method names. There was a typo varargs, varagrs. Thanks zhong.j.yu for pointing that out.</p> <p><strong>Corrected code and expected behavior:</strong></p> <pre><code>void varargs(int... i){ System.out.println("Inside int varargs"); for(int x : i) System.out.println(x); } void varargs(long... l){ System.out.println("Inside long varargs"); for(long x : l) System.out.println(x); } static void staticvarargs(int...i) { System.out.println("Inside static int varargs"); for(int x : i) System.out.println(x); } static void staticvarargs(long...l) { System.out.println("Inside static long varargs"); for(long x : l) System.out.println(x); } public static void main(String args[]){ VarArgs va = new VarArgs(); va.varargs(1); staticvarargs(1); } </code></pre> <p>Output:</p> <p>Inside int varargs 1</p> <p>Inside static int varargs 1</p>
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    1. COWhile I can't explain the behaviour, this is probably the sought of confusion that prompted Oracle to explicitly suggest vararg methods are not overloaded [in the Javadocs](http://docs.oracle.com/javase/1.5.0/docs/guide/language/varargs.html).
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    2. COhttp://stackoverflow.com/questions/2521293/bug-with-varargs-and-overloading
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      1. USEvgeni Dimitrov
    3. CO@Evgeny That's a different issue, isn't it?
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