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
elseExpression= assign2.getRightHandSide();
					}
				}
			}
		}
		if (thenExpression == null || elseExpression == null) {
			return false;
		}
		
		if (resultingCollections == null) {
			return true;
		}
		
		AST ast= node.getAST();
		ASTRewrite rewrite= ASTRewrite.create(ast);
		
		String label= CorrectionMessages.AdvancedQuickAssistProcessor_replaceIfWithConditional;
		Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
		ASTRewriteCorrectionProposal proposal= new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(), rewrite, 1, image);
		
		
		ConditionalExpression conditionalExpression = ast.newConditionalExpression();
		Expression conditionCopy= (Expression) rewrite.createCopyTarget(ifStatement.getExpression());
		conditionalExpression.setExpression(conditionCopy);
		Expression thenCopy= (Expression) rewrite.createCopyTarget(thenExpression);
		Expression elseCopy= (Expression) rewrite.createCopyTarget(elseExpression);
		
		if (!JavaModelUtil.is50OrHigher(context.getCompilationUnit().getJavaProject())) {
			ITypeBinding thenBinding= thenExpression.resolveTypeBinding();
			ITypeBinding elseBinding= elseExpression.resolveTypeBinding();