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
ITypeBinding binding= searchRoot.getAST().resolveWellKnownType("java.lang.Object"); 
		IMethodBinding[] objectMethods= binding.getDeclaredMethods();
		for (int i= 0; i < objectMethods.length; i++) {
			IMethodBinding meth= objectMethods[i];
			if (meth.getName().equals(selector) && meth.getParameterTypes().length == nArgs) {
				return new ITypeBinding[] { binding };
			}
		}
		visitAllBindings(searchRoot, new TypeBindingVisitor() {
			private HashSet fVisitedBindings= new HashSet(100);
			public boolean visit(ITypeBinding node) {
				node= Bindings.normalizeTypeBinding(node);
				if (node == null) {
					return true;
				}
				
				if (!fVisitedBindings.add(node.getKey())) {
					return true;
				}
				if (node.isGenericType()) {
					return true; 
				}
				if (context != null && !isUseableTypeInContext(node, context, false)) {
					return true;
				}
				
				IMethodBinding[] methods= node.getDeclaredMethods();
				for (int i= 0; i < methods.length; i++) {