20. 阅读下面程序
import javax.swing.JOptionPane;
public class BreakLabelTest {
public static void main(String args[]){
String output="";
stop:{
for(int row=1;row<=10;row++){
for(int column=1;column<=5;column++){
if(row==5)
break stop;
output+="* ";
}
output+="\n";
}
output+= "\nLoops terminated normally";
}
JOptionPane.showMessageDialog(
null,output,"用一个标志测试break语句",
JOptionPane.INFORMATION_MESSAGE);
System.exit(0);
}
}
程序运行结果是______。
