Bug 82940 [quick fix] Missing sensible conversion suggestion
For this code > % cat Test.java import java.util.Collections; import java.util.List; public class Test { interface Wrapper { int doit(); } private static final List<Wrapper> STD_WRAPPERS = Collections.singletonList ((Wrapper)new Wrapper() { public int doit() { return 0; } }); private static final List<Wrapper> STD_WRAPPERS2 = Collections.singletonList (new Wrapper() { public int doit() { return 0; } }); } The value passed Collections.singletonList is actually of the right type so a sensible conversion would be to put in the cast (see the difference between the 2 statics). The current quick fixes offered assume the type being assigned to is wrong (when infact it is right). A useful quick fix would be to cast the parameter to the right type to give the left type (this would help with any 1 arg method of the form X<T> method(T)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/correction/ASTResolving.java
return null;
			}
		}			
		return bound;
	}
	
	public static String getTypeSignature(ITypeBinding type) {
		return BindingLabelProvider.getBindingLabel(type, BindingLabelProvider.DEFAULT_TEXTFLAGS);
	}
	public static String getMethodSignature(IMethodBinding binding, boolean inOtherCU) {
		StringBuffer buf= new StringBuffer();
		if (inOtherCU && !binding.isConstructor()) {
			buf.append(binding.getDeclaringClass().getTypeDeclaration().getName()).append('.'); 
		}
		return BindingLabelProvider.getBindingLabel(binding, BindingLabelProvider.DEFAULT_TEXTFLAGS);
	}
	public static String getMethodSignature(String name, ITypeBinding[] params) {
		StringBuffer buf= new StringBuffer();
		buf.append(name).append('(');
		for (int i= 0; i < params.length; i++) {
			if (i > 0) {
				buf.append(JavaElementLabels.COMMA_STRING);
			}
			buf.append(getTypeSignature(params[i]));
		}
		buf.append(')');
		return buf.toString();
	}
}