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...
答题技巧
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