【JavaGuide学习笔记】Day.2

简介: 【JavaGuide学习笔记】

JAVA基础常见面试题(上)

1.成员变量和局部变量的区别?

 语法形式、存储方式、生存时间、默认值

2.静态变量有什么作用?static

3.字符型常量和字符串常量的区别?  

  形式、含义、占内存大小

4.静态方法为什么不能调用非静态成员?

5.静态方法和实例方法有何不同?

 调用方式、访问类成员是否存在限制

6.重写和重载有什么区别?

7.什么是可变长参数?

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