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
} else {
				
				ITypeBinding leftHandBinding= infix.getLeftOperand().resolveTypeBinding();
				if (leftHandBinding != null) {
					return leftHandBinding;
				}
			}
			if (op != InfixExpression.Operator.EQUALS && op != InfixExpression.Operator.NOT_EQUALS) {
				return infix.getAST().resolveWellKnownType("int"); 
			}
			break;
		case ASTNode.INSTANCEOF_EXPRESSION:
			InstanceofExpression instanceofExpression= (InstanceofExpression) parent;
			return instanceofExpression.getRightOperand().resolveBinding();
		case ASTNode.VARIABLE_DECLARATION_FRAGMENT:
			VariableDeclarationFragment frag= (VariableDeclarationFragment) parent;
			if (frag.getInitializer().equals(node)) {
				return frag.getName().resolveTypeBinding();
			}
			break;
		case ASTNode.SUPER_METHOD_INVOCATION:
			SuperMethodInvocation superMethodInvocation= (SuperMethodInvocation) parent;
			IMethodBinding superMethodBinding= ASTNodes.getMethodBinding(superMethodInvocation.getName());
			if (superMethodBinding != null) {
				return getParameterTypeBinding(node, superMethodInvocation.arguments(), superMethodBinding);
			}
			break;
		case ASTNode.METHOD_INVOCATION:
			MethodInvocation methodInvocation= (MethodInvocation) parent;
			IMethodBinding methodBinding= methodInvocation.resolveMethodBinding();