//程序員：羅元昊 2017.9.6
public class aaa{
public static void main(String[] args){
System.out.println(" J A V V A ");
System.out.println(" J A A V V A A ");
System.out.println(" J J A A A V V A A A ");
System.out.println(" J J A A V A A ");
//水平有限，無法找到規律使用for
}
}

java練習---1