Bug 120389 [quick fix] replace conditional with if-else removes + from +=
Using Build I20051102-1600. I create a class [snip] package bla; class Bla { void bla() { boolean cond = true; int i = 42; i += ( cond ) ? 1 : 2; } } [snap] Now I move the cursor over the second cond and trigger the Quickfix 'Replace conditional with if-else'. This results in [snip] int i = 42; if (cond) i = 1; else i = 2; [snap] i.e. replaces the '+=' with '='. (Credit to Jordi Boehme for finding this.)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/correction/AdvancedQuickAssistProcessor.java
if (parentInfix.getLeftOperand() != parenthesizedExpression)
									return;
							}
						}
					}
					
					rewrite.replace(parenthesizedExpression, rewrite.createMoveTarget(expression), null);
					changedNodes.add(node);
				}
			});
		}
		
		if (changedNodes.isEmpty())
			return false;
		if (resultingCollections == null) {
			return true;
		}
		
		String label= CorrectionMessages.AdvancedQuickAssistProcessor_removeParenthesis_description;
		Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_REMOVE);
		ASTRewriteCorrectionProposal proposal= new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(), rewrite, 1, image);
		resultingCollections.add(proposal);
		return true;
	}
	private static boolean isStringExpression(Expression expression) {
		ITypeBinding binding = expression.resolveTypeBinding();
		return binding.getQualifiedName().equals("java.lang.String"); 
	}
	private static int getExpressionPrecedence(Expression expression) {
		if (expression instanceof PostfixExpression) {