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
block.getParent().setStructuralProperty(block.getLocationInParent(), innerBlock);
			}
		}
		
		rewrite.replace(switchStatement, firstIfStatement, null);
		
		String label= CorrectionMessages.AdvancedQuickAssistProcessor_convertSwitchToIf;
		
		Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
		ASTRewriteCorrectionProposal proposal= new ASTRewriteCorrectionProposal(label,
			context.getCompilationUnit(),
			rewrite,
			1,
			image);
		resultingCollections.add(proposal);
		return true;
	}
	private static InfixExpression createSwitchCaseCondition(AST ast,
			ASTRewrite rewrite,
			SwitchStatement switchStatement,
			SwitchCase switchCase) {
		InfixExpression condition= ast.newInfixExpression();
		condition.setOperator(InfixExpression.Operator.EQUALS);
		
		Expression leftExpression= (Expression) rewrite.createCopyTarget(switchStatement.getExpression());
		condition.setLeftOperand(leftExpression);
		
		Expression rightExpression= (Expression) rewrite.createCopyTarget(switchCase.getExpression());
		condition.setRightOperand(rightExpression);