常量值传递的示例

public class Main {

  // x uses pass by constant value and y uses pass by value//来自 时代Java公众号 - N o w J a  v a . c o m

  public static void test(final int x, int y) {

    System.out.println("#2: x = " + x + ", y = " + y);  

    y = 3; // Ok to change y

    System.out.println("#3: x = " + x + ", y = " + y);

  }

  public static void main(String[] args) {

    int a = 1;

    int b = 3;  

    System.out.println("#1: a = " + a +