chap4-2.txt

来自「JAVA 学习资源」· 文本 代码 · 共 31 行

// 程序4-2
class loc { 
    int x=1;				// 实例变量

    void  printLocVar( ){
        int x=25;			// 局部变量
        System.out.println("\n x in printLocVar is :"+x);
        ++x;
        System.out.println(" x in printLocVar is :"+x);
    }

    void printInstanceVar( ){
        System.out.println("\n instance variable x is :"+x);
        x*=10;			// 实例变量 x
        System.out.println(" instance variable x is :"+x);
    }
} // end of class loc


public class testInstanceVar {		// 程序的主类
    public static void main(String args[ ]){
        loc  obj=new loc( );
        int x=5;			// 局部变量 x

        System.out.println(" x in main is :"+x);
        obj.printLocVar( );                
        obj.printInstanceVar( );        
        System.out.println(" x in main is :"+x);
    }
  }