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
}
	public static ICompilationUnit findCompilationUnitForBinding(ICompilationUnit cu, CompilationUnit astRoot, ITypeBinding binding) throws JavaModelException {
		if (binding == null || !binding.isFromSource() || binding.isTypeVariable() || binding.isWildcardType()) {
			return null;
		}
		ASTNode node= astRoot.findDeclaringNode(binding.getTypeDeclaration());
		if (node == null) {
			ICompilationUnit targetCU= Bindings.findCompilationUnit(binding, cu.getJavaProject());
			if (targetCU != null) {
				return targetCU;
			}
			return null;
		} else if (node instanceof AbstractTypeDeclaration || node instanceof AnonymousClassDeclaration) {
			return cu;
		}
		return null;
	}
	private static final Code[] CODE_ORDER= { PrimitiveType.CHAR, PrimitiveType.SHORT, PrimitiveType.INT, PrimitiveType.LONG, PrimitiveType.FLOAT, PrimitiveType.DOUBLE };
	public static ITypeBinding[] getRelaxingTypes(AST ast, ITypeBinding type) {
		ArrayList res= new ArrayList();
		res.add(type);
		if (type.isArray()) {
			res.add(ast.resolveWellKnownType("java.lang.Object")); 
			res.add(ast.resolveWellKnownType("java.io.Serializable")); 
			res.add(ast.resolveWellKnownType("java.lang.Cloneable")); 
		} else if (type.isPrimitive()) {
			Code code= PrimitiveType.toCode(type.getName());
			boolean found= false;
			for (int i= 0; i < CODE_ORDER.length; i++) {
				if (found) {