How to intercept a string in java

Java method of intercepting a string: You can use the substring() function, such as [s.substring(0,s.length() - 1)], which means removing the last character in the string.

String removes the last character

(Recommended tutorial: java course)

String s = "name=Marydon&sex=男&age=18&";
System.out.println("String去除最后一个字符：" + s.substring(0,s.length() - 1));

StringBuilder Remove the last character

Method 1: substring(), returns the String type. It is recommended to use

StringBuilder sb = new StringBuilder("name=Marydon&sex=男&age=18&");
System.out.println("StringBuilder去除最后一个字符》方式一：" + sb.substring(0,sb.length() - 1));

Method 2: replace(), returns the StringBuilder

System.out.println("StringBuilder去除最后一个字符》方式二："+sb.replace(sb.length() - 1,sb.length(),""));

method Three: deleteCharAt(), returns StringBuilder

System.out.println("StringBuilder去除最后一个字符》方式三：" + sb.deleteCharAt(sb.length() - 1));

Related recommendations:Getting Started with Java

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