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                # java - 使用空格和零右填充字符串 > 原文: [https://beginnersbook.com/2014/07/java-right-padding-a-string-with-spaces-and-zeros/](https://beginnersbook.com/2014/07/java-right-padding-a-string-with-spaces-and-zeros/) 在本教程中,我們將看到如何正確填充帶空格和零的字符串: #### 1)使用空格右填充 ```java public class PadRightExample1 { public static void main(String[] argv) { System.out.println("#" + rightPadding("mystring", 10) + "@"); System.out.println("#" + rightPadding("mystring", 15) + "@"); System.out.println("#" + rightPadding("mystring", 20) + "@"); } public static String rightPadding(String str, int num) { return String.format("%1$-" + num + "s", str); } } ``` **輸出:** ```java #mystring @ #mystring @ #mystring @ ``` #### 2)使用零右填充 ```java public class PadRightExample2 { public static void main(String[] argv) { System.out.println("#" + rightPadZeros("mystring", 10) + "@"); System.out.println("#" + rightPadZeros("mystring", 15) + "@"); System.out.println("#" + rightPadZeros("mystring", 20) + "@"); } public static String rightPadZeros(String str, int num) { return String.format("%1$-" + num + "s", str).replace(' ', '0'); } } ``` **輸出:** ```java #[email?protected] #[email?protected] #[email?protected] ```
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