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
expression.extendedOperands().add(rightLiteral);
			}
		}
		
		rewrite.replace(stringLiteral, expression, null);
		
		String label= CorrectionMessages.AdvancedQuickAssistProcessor_pickSelectedString;
		Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
		LinkedCorrectionProposal proposal= new LinkedCorrectionProposal(label, context.getCompilationUnit(), rewrite, 1, image);
		proposal.addLinkedPosition(rewrite.track(centerLiteral), true, "CENTER_STRING"); 
		resultingCollections.add(proposal);
		return true;
	}
	private static Statement getSingleStatement(Statement statement) {
		if (statement instanceof Block) {
			List blockStatements= ((Block) statement).statements();
			if (blockStatements.size() != 1) {
				return null;
			}
			return (Statement) blockStatements.get(0);
		}
		return statement;
	}
	private static boolean getReplaceIfElseWithConditionalProposals(IInvocationContext context, ASTNode node, Collection resultingCollections) {
		if (!(node instanceof IfStatement)) {
			return false;
		}
		IfStatement ifStatement= (IfStatement) node;
		Statement thenStatement= getSingleStatement(ifStatement.getThenStatement());
		Statement elseStatement= getSingleStatement(ifStatement.getElseStatement());