Lambda: An expression-body lambda and a block-body lambda are equivalent

A lambda can be written as a single expression whose value is returned implicitly, or as a braced block with an explicit return statement and explicit parameter types; both forms produce the same functional interface implementation.

Code

BinaryOperator<Integer> addExpr = (a, b) -> a + b;
BinaryOperator<Integer> addBlock = (Integer a, Integer b) -> {
    int sum = a + b;
    return sum;
};
System.out.println("Expression body: " + addExpr.apply(2, 3));
System.out.println("Block body: " + addBlock.apply(2, 3));

Output

Expression body: 5
Block body: 5