Java Conditional Operator (?:): Syntax, Nesting Rules, and Interview Tips

Java's conditional operator (?:) is the language's only ternary operator, taking three operands to evaluate a boolean condition and return one of two values in a single line. Its syntax follows the pattern: result = (condition) ? valueIfTrue : valueIfFalse, making it a compact alternative to standard if-else assignments. The operator supports nesting, allowing multiple conditions to be chained similarly to if-else-if ladders, though deep nesting can reduce readability. Both branches of the operator must return compatible types; mismatched types such as an int and a String will cause a compiler error. Due to its concise syntax, type compatibility rules, and nesting behavior, the conditional operator is a commonly tested topic in Java technical interviews.