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
break;
		}
		case ASTNode.CLASS_INSTANCE_CREATION: {
			ClassInstanceCreation creation= (ClassInstanceCreation) parent;
			IMethodBinding creationBinding= creation.resolveConstructorBinding();
			if (creationBinding == null) { 
				ITypeBinding type= creation.getType().resolveBinding();
				if (type != null) {
					creationBinding= guessContructorBinding(type, creation.arguments());
				}
			}
			if (creationBinding != null) {
				return getParameterTypeBinding(node, creation.arguments(), creationBinding);
			}
			break;
		}
		case ASTNode.PARENTHESIZED_EXPRESSION:
			return guessBindingForReference(parent);
		case ASTNode.ARRAY_ACCESS:
			if (((ArrayAccess) parent).getIndex().equals(node)) {
				return parent.getAST().resolveWellKnownType("int"); 
			} else {
				return getPossibleReferenceBinding(parent);
			}
		case ASTNode.ARRAY_CREATION:
			if (((ArrayCreation) parent).dimensions().contains(node)) {
				return parent.getAST().resolveWellKnownType("int"); 
			}
			break;
		case ASTNode.ARRAY_INITIALIZER: