Description eclipse.19.jbag 2006-08-25 14:30:37 EDT

Another bug in the conditional operator, along the lines of Bug 117495 and Bug 122987:

Source code:

public class X {
    public static void main(String[] args) {
        Object x = true ? true : "";

        System.out.println("value " + x + " of class " + x.getClass().getCanonicalName());
    }
}


According to spec, x should have type Boolean, but instead it is assigned type String.

A similarly bizarre String conversion happens with other arguments when the alternate return values are of incompatible literal types.  For example:

    Object x = true ? 3.0f : false;
    Object x = true ? 2 : false;
    Object x = false ? 2 : false;

In all of these cases the resulting type of x is incorrectly java.lang.String.