public class Demo1 {
public static void main(String[] args) throws Exception {
System.out.println(" J A V V A");
System.out.println(" J A A V V A A");
System.out.println("J J AAAAA V V AAAAA");
System.out.println(" J J A A V A A");
}
}public class Demo2 {
public static void main(String[] args) throws Exception {
// -左对齐,5表示输出元素占5个单位,s表示输出的是字符串,%n是换行
System.out.format("%-5s%-5s%-5s%n", "a", "a^2", "a^3");
for (int i = 1; i <= 4; i++) {
// 同理,%d 表示输出的是整数
System.out.format("%-5d%-5d%-5d%n", i, i * i, i * i * i);
}
}
}
分别运行的结果:
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/fc1f4134970a304e90cd6e7bd7c8a786c8175c40?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/29381f30e924b899b27ab7b968061d950b7bf6e9?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)