staticvartest.java

java程序设计 清华出版社 孙燮华老师编写的程序源代码

//StaticVarTest.java
//
class Count {
  private int serialNumber;
  public static int counter = 0;    //类变量
  
  public Count(){
    counter++;
    serialNumber=counter;
  }
  public int getSerialNumber(){
  	return serialNumber;
  }
}

public class StaticVarTest {
  public static void main(String[] args){
    Count[] ct=new Count[5];
    for(int i=0;i<ct.length;i++){
      ct[i]=new Count();
      System.out.println("ct["+i+"].serialNumber = "+ct[i].getSerialNumber());
    }
  }
}