Data Structures And Problem Solving Using Java (Fourth Edition)中译版(Java static关键字)
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Java static关键字
static关键字:静态的意思
有三种用法:静态变量、静态方法、静态块
静态块:最先加载且只加载一次
静态变量:静态变量的值可变,而且会保持最新的值。(静态变量的静态表现在:不会随函数的调用或退出而发生变化。)
静态方法:没有this引用
注:getTodayDay()写在Person.java中
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