globalvar.java

来自「JSF 演示代码」· Java 代码 · 共 24 行

/*
*测试全局变量的操作
*/
public class GlobalVar
{
	int a = 10;
	double b = 20;
	public static void main(String[] args)
	{
		GlobalVar globalVar = new GlobalVar();
		System.out.println("the value a = " + globalVar.a);
		globalVar.print();
		System.out.println("after changed the value a = " + globalVar.a);
	}
	public void print()
	{
		System.out.println("the global variable　a = " + a + ", b = " + b);
		a=30;
		System.out.println("the global variable　a = " + a + ", b = " + b);

	}
}