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
parent= parent.getParent();
		}
		switch (parent.getNodeType()) {
			case ASTNode.TYPE_DECLARATION:
				if (node.getLocationInParent() == TypeDeclaration.SUPER_INTERFACE_TYPES_PROPERTY) {
					kind= SimilarElementsRequestor.INTERFACES;
				} else if (node.getLocationInParent() == TypeDeclaration.SUPERCLASS_TYPE_PROPERTY) {
					kind= SimilarElementsRequestor.CLASSES;
				}
				break;
			case ASTNode.ENUM_DECLARATION:
				kind= SimilarElementsRequestor.INTERFACES;
				break;
			case ASTNode.METHOD_DECLARATION:
				if (node.getLocationInParent() == MethodDeclaration.THROWN_EXCEPTIONS_PROPERTY) {
					kind= SimilarElementsRequestor.CLASSES;
				} else if (node.getLocationInParent() == MethodDeclaration.RETURN_TYPE2_PROPERTY) {
					kind= SimilarElementsRequestor.ALL_TYPES | SimilarElementsRequestor.VOIDTYPE;
				}
				break;
			case ASTNode.INSTANCEOF_EXPRESSION:
				kind= SimilarElementsRequestor.REF_TYPES  & ~SimilarElementsRequestor.VARIABLES;
				break;
			case ASTNode.THROW_STATEMENT:
				kind= SimilarElementsRequestor.CLASSES;
				break;
			case ASTNode.CLASS_INSTANCE_CREATION:
				if (((ClassInstanceCreation) parent).getAnonymousClassDeclaration() == null) {
					kind= SimilarElementsRequestor.CLASSES;
				} else {