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
getJoinAndIfStatementsProposals(context, coveringNode, resultingCollections);
				getSplitAndConditionProposals(context, coveringNode, resultingCollections);
				getJoinOrIfStatementsProposals(context, coveringNode, coveredNodes, resultingCollections);
				getSplitOrConditionProposals(context, coveringNode, resultingCollections);
				getInverseConditionalExpressionProposals(context, coveringNode, resultingCollections);
				getExchangeInnerAndOuterIfConditionsProposals(context, coveringNode, resultingCollections);
				getExchangeOperandsProposals(context, coveringNode, resultingCollections);
				getCastAndAssignIfStatementProposals(context, coveringNode, resultingCollections);
				getPickOutStringProposals(context, coveringNode, resultingCollections);
				getReplaceIfElseWithConditionalProposals(context, coveringNode, resultingCollections);
				getReplaceConditionalWithIfElseProposals(context, coveringNode, resultingCollections);
				getInverseLocalVariableProposals(context, coveringNode, resultingCollections);
				getPushNegationDownProposals(context, coveringNode, resultingCollections);
				getPullNegationUpProposals(context, coveringNode, coveredNodes, resultingCollections);
				getJoinIfListInIfElseIfProposals(context, coveringNode, coveredNodes, resultingCollections);
				getConvertSwitchToIfProposals(context, coveringNode, resultingCollections);
			}
			return (IJavaCompletionProposal[]) resultingCollections.toArray(new IJavaCompletionProposal[resultingCollections.size()]);
		}
		return null;
	}
	private static boolean noErrorsAtLocation(IProblemLocation[] locations) {
		if (locations != null) {
			for (int i = 0; i < locations.length; i++) {
				if (locations[i].isError()) {
					return false;
				}
			}
		}
		return true;