inconsistency between Sun JRE javac and Eclipse java compiler?
- by Jason S
This confuses me. The following compiles fine under Eclipse.
package com.example.gotchas;
public class GenericHelper1 {
static <T> T fail() throws UnsupportedOperationException
{
throw new UnsupportedOperationException();
}
/**
* just calls fail()
* @return something maybe
*/
public boolean argh() { return fail(); }
public static void main(String[] args) {
// TODO Auto-generated method stub
}
}
But if I try to do a clean build with ant, or at the command line with javac, I get this:
src\com\example\gotchas\GenericHelper1.java:14: type parameters of <T>T cannot be determined; no unique maximal instance
exists for type variable T with upper bounds boolean,java.lang.Object
public boolean argh() { return fail(); }
^
1 error
what gives, and how do I fix it?
