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                # 如何在 Java 中僅刪除字符串的尾隨空格 > 原文: [https://beginnersbook.com/2014/07/how-to-remove-only-trailing-spaces-of-a-string-in-java/](https://beginnersbook.com/2014/07/how-to-remove-only-trailing-spaces-of-a-string-in-java/) 在本教程中,我們將學習如何從字符串中修剪尾隨空格而不是前導空格。這是完整的代碼: ```java class TrimBlanksExample { public static void main(String[] args) { System.out.println("#"+trimTrailingBlanks(" How are you?? ")+"@"); System.out.println("#"+trimTrailingBlanks(" I'm Fine. ")+"@"); } public static String trimTrailingBlanks( String str) { if( str == null) return null; int len = str.length(); for( ; len > 0; len--) { if( ! Character.isWhitespace( str.charAt( len - 1))) break; } return str.substring( 0, len); } } ``` **輸出:** ```java # How are [email?protected] # I'm [email?protected] ``` 正如您所看到的,字符串和`"@"`之間沒有空格,表明已從字符串中刪除了尾隨空格。此外,輸出中的`"#"`和`String`之間有空格,表示不會從字符串中刪除前導空格。 **參考:** [`substring()`方法](https://beginnersbook.com/2013/12/java-string-substring-method-example/ "Java – String substring() Method example") [`charAt()`方法](https://beginnersbook.com/2013/12/java-string-charat-method-example/ "Java – String charAt() Method example") [`length()`方法](https://beginnersbook.com/2013/12/java-string-length-method-example/ "Java – String length() Method example") [`isWhitespace()`方法](https://docs.oracle.com/javase/7/docs/api/java/lang/Character.html#isWhitespace(char))
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