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/UnresolvedElementsSubProcessor.java
Expression sender= invocationNode.getExpression();
		if (sender instanceof ThisExpression) {
			return;
		}
		ITypeBinding senderBinding= sender.resolveTypeBinding();
		if (senderBinding == null || Modifier.isFinal(senderBinding.getModifiers())) {
			return;
		}
		if (sender instanceof Name && ((Name) sender).resolveBinding() instanceof ITypeBinding) {
			return; 
		}
		ASTNode parent= invocationNode.getParent();
		while (parent instanceof Expression && parent.getNodeType() != ASTNode.CAST_EXPRESSION) {
			parent= parent.getParent();
		}
		boolean hasCastProposal= false;
		if (parent instanceof CastExpression) {
			
			hasCastProposal= useExistingParentCastProposal(cu, (CastExpression) parent, sender, invocationNode.getName(), getArgumentTypes(invocationNode.arguments()), proposals);
		}
		if (!hasCastProposal) {
			
			Expression target= sender;
			while (target instanceof ParenthesizedExpression) {
				target= ((ParenthesizedExpression) target).getExpression();
			}
			String label;
			if (target.getNodeType() != ASTNode.CAST_EXPRESSION) {
				String targetName= null;
				if (target.getLength() <= 18) {