java中"Static块"是怎么回事,怎么用的,有什么意义
2021-06-19 08:03
标签:nload 静态 you dex 覆盖 block inner font test 6.Static块 (视频下载) (全部书籍) Static块:该类的任何方法被首次触碰到时(马克-to-win: when you touch Test的main方法时),Static块被运行。可以在里面初始化你的static变量,不能访问实例变量。在所有静态变量初始化之后运行,见例子。 本章源码 class Test1{ static void cal(int x) { // 静态块儿Static block public static void main(String args[]) { java中"Static块"是怎么回事,怎么用的,有什么意义 标签:nload 静态 you dex 覆盖 block inner font test 原文地址:https://www.cnblogs.com/mark-to-win/p/9690921.html
static {
System.out.println("Static block Test1 initialized.");
}
}
public class Test {
/*下面两句话是在静态块儿之前执行,所以它的值,被静态块儿里面赋的值所覆盖掉。马克-to-win, the following two
statements are before the execution of the static block.*/
static int a = 3;
static int b;
int c;
System.out.println("x = " + x);
System.out.println("a = " + a);
System.out.println("b = " + b);
}
static {
// c=9; 是错误的,will cause an error.
System.out.println("Static block initialized.");
a = 9;
b = a * 4;
System.out.println("a = " + a);
System.out.println("b = " + b); }
System.out.println("in main");
。。。。。。。。。。。。。。。。。。。
详情请见:http://www.mark-to-win.com/index.html?content=JavaBeginner/javaUrl.html&chapter=JavaBeginner/JavaBeginner2_web.html#StaticBlock
文章标题:java中"Static块"是怎么回事,怎么用的,有什么意义
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