passbyvaluetest.java

《Java核心技术应用开发》电子工业出版社书籍源代码

/**
 * 演示参数传递的使用
 *
 */

class ParamPassTest {
  void meth(int i,int j) {
    i *= 2;
    j /= 2;
  }
}

public class PassByValueTest {
  public static void main(String args[]) {
    ParamPassTest ob = new ParamPassTest ();
    int a = 10,b = 20;
    System.out.println("a and b before call: " +a + " " + b);
    ob.meth(a,b);
    System.out.println("a and b after call: " +a + " " + b);
  }
}