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
}
			int relevance= Character.isUpperCase(ASTNodes.getSimpleNameIdentifier(node).charAt(0)) ? 5 : -2;
			addSimilarTypeProposals(typeKind, cu, node, relevance + 1, proposals);
			addNewTypeProposals(cu, node, typeKind, relevance, proposals);
		}
		if (!suggestVariableProposals) {
			return;
		}
		SimpleName simpleName= node.isSimpleName() ? (SimpleName) node : ((QualifiedName) node).getName();
		boolean isWriteAccess= ASTResolving.isWriteAccess(node);
		
		addSimilarVariableProposals(cu, astRoot, binding, simpleName, isWriteAccess, proposals);
		
		addNewFieldProposals(cu, astRoot, binding, declaringTypeBinding, simpleName, isWriteAccess, proposals);
		
		if (binding == null) {
			addNewVariableProposals(cu, node, simpleName, proposals);
		}
	}
	private static void addNewVariableProposals(ICompilationUnit cu, Name node, SimpleName simpleName, Collection proposals) {
		String name= simpleName.getIdentifier();
		BodyDeclaration bodyDeclaration= ASTResolving.findParentBodyDeclaration(node);
		int type= bodyDeclaration.getNodeType();
		if (type == ASTNode.METHOD_DECLARATION) {
			int relevance= StubUtility.hasParameterName(cu.getJavaProject(), name) ? 8 : 5;
			String label= Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_createparameter_description, simpleName.getIdentifier());
			Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_LOCAL);
			proposals.add(new NewVariableCompletionProposal(label, cu, NewVariableCompletionProposal.PARAM, simpleName, null, relevance, image));
		}
		if (type == ASTNode.INITIALIZER || (type == ASTNode.METHOD_DECLARATION && !ASTResolving.isInsideConstructorInvocation((MethodDeclaration) bodyDeclaration, node))) {