Bug 76530 [options] Warn about unused local variables and private members
I think we should warn about unused local variables and unused private members by default. These things are errors akin to unused imports, which we already warn about.
org.eclipse.jdt.ui.tests/ui/org/eclipse/jdt/ui/tests/quickfix/UnresolvedVariablesQuickFixTest.java
String preview2= getPreviewContent(proposal);
	
		buf= new StringBuffer();
		buf.append("package test1;\n");
		buf.append("public class E {\n");
		buf.append("    public E(String s) {\n");
		buf.append("    }\n");
		buf.append("    public E(String x) {\n");
		buf.append("        this(x);\n");
		buf.append("    }\n");
		buf.append("}\n");
		String expected2= buf.toString();
		
		proposal= (CUCorrectionProposal) proposals.get(2);
		String preview3= getPreviewContent(proposal);
	
		buf= new StringBuffer();
		buf.append("package test1;\n");
		buf.append("public class E {\n");
		buf.append("    private static final String x = null;\n");
		buf.append("    public E(String s) {\n");
		buf.append("    }\n");
		buf.append("    public E() {\n");
		buf.append("        this(x);\n");
		buf.append("    }\n");
		buf.append("}\n");
		String expected3= buf.toString();
		
		assertEqualStringsIgnoreOrder(new String[] { preview1, preview2, preview3 }, new String[] { expected1, expected2, expected3 });		
	}