都四次上课练习
package 課后四講;2 3 import javax.swing.JOptionPane;4 5 class Example 6 { 7 static int value=0; 8 public Example() 9 { 10 value++; 11 12 } 13 } 14 public class Ckleigeshu { 15 16 public static void main(String[] args) { 17 Example section1=new Example(); 18 Example section2=new Example(); 19 Example section3=new Example(); 20 String output="你已經(jīng)創(chuàng)建了"+Example.value+"個(gè)對(duì)象"; 21 JOptionPane.showMessageDialog(null, output, 22 "結(jié)果如下:", 23 JOptionPane.INFORMATION_MESSAGE ); 24 25 } 26 27 }
轉(zhuǎn)載于:https://www.cnblogs.com/lwhlll/p/5985802.html
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