exchange.java

刘艺编著的java教程的课本习题加例题代码 很有用哦！

public class Exchange
{
   public static void main(String args[]) 
   {
      int a,b,t;
      a=2;
      b=3;
      System.out.println("a="+a+"    "+"b="+b);
      t=a;
      a=b;
      b=t;
      System.out.println("a="+a+"    "+"b="+b);
   }
}