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Java 常见基础面试题总结 Ⅱ

Created2024-02-28|Updated2024-02-28|Interview
|Word count:7|Reading time:1min|Post View:
Author: Cyan Chau
Link: https://cyanzzy.github.io/2024/02/28/Java-Java%E5%B8%B8%E8%A7%81%E5%9F%BA%E7%A1%80-Java%E5%B8%B8%E8%A7%81%E5%9F%BA%E7%A1%80%E9%9D%A2%E8%AF%95%E9%A2%98%E2%85%A1/
Copyright Notice: All articles in this blog are licensed under CC BY-NC-SA 4.0 unless stating additionally.
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  1. 1. 面向对象基础
    1. 1.1. 面向对象和面向过程
    2. 1.2. 对象实体与对象引用不同
    3. 1.3. 对象的相等和引用相等的区别
    4. 1.4. 类没有声明构造方法,程序能正确执行吗?
    5. 1.5. 构造方法特点 && 是否可被 override
    6. 1.6. 面向对象三大特征
    7. 1.7. 接口和抽象类
    8. 1.8. 深拷贝、浅拷贝、引用拷贝
  2. 2. Object
    1. 2.1. Object 类的常见方法
    2. 2.2. == 和 equals() 的区别
    3. 2.3. hashCode()
    4. 2.4. 为什么要有 hashCode?
    5. 2.5. 为什么重写 equals() 时必须重写 hashCode() 方法?
  3. 3. String
    1. 3.1. String、StringBuffer、StringBuilder 区别
    2. 3.2. String 不可变的原因
    3. 3.3. 字符串拼接用“+” OR “StringBuilder”
    4. 3.4. String#equals() 和 Object#equals()
    5. 3.5. 字符串常量池
    6. 3.6. String s1 = new String(“abc”);(重点)
    7. 3.7. String#intern 方法(重点)
    8. 3.8. String 类型的变量和常量做 + 运算时发生了什么?
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