1. Why does String s = "a"; s += "b"; create extra objects?

1. Why does String s = "a"; s += "b"; create extra objects?

题目类型: 技术面试题

这是一道技术面试题，常见于澳洲IT公司面试中。

难度: medium

标签: interviewbit, java, topic-specific

参考答案摘要

String in Java is immutable, so its value can never change. When you do s += "b", Java creates a new String object with "ab" and leaves the old "a" object as it is. That’s why repeated joining of stri...

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