The String class in Java is one of the most important classes in Java. After reading this article you will be able to use the ‘substring()` method of the Str...
When we do not pass theendIndexargument, the substring is taken up to the last character of the string. In other words, if not specified, the value ofendIndexis always‘string.length() – 1’. In the following example, we are getting the substring from index position 6. Assertions.asser...
整合上述步骤,下面是一个完整的 Java 程序示例: publicclassSubstringExample{publicstaticvoidmain(String[]args){// 创建一个字符串变量StringoriginalString="Hello, World!";// 判断字符串是否为空if(originalString.isEmpty()){System.out.println("字符串为空,无法去掉最后一位。");}else{// 使用 substring ...
importjava.util.Scanner;publicclassSubstringExample{publicstaticvoidmain(String[]args){Scannerscanner=newScanner(System.in);System.out.println("请输入带有用户名的字符串:");Stringinput=scanner.nextLine();intstartIndex=input.indexOf(":")+1;intendIndex=input.indexOf("@");Stringusername=input.substrin...
Java Syntax Reference Feedback Language Java Version: SE 8 Categories User Program Communication Variables Control Flow Object Oriented Programming String Class String Variables String Length String Compare String Trim Split String Substring String Representation String Class Substring in Java A substring is...
Substring in Java: What is a substring in Java? Programmers often need to retrieve an individual character or a group of characters (substring) from a string. For example, in a word processing program, a part of the string is copied or deleted. WhilecharAt()method returns only a single ch...
Example publicclassSubstringExample2{ publicstaticvoidmain(Stringargs[]){ Stringstr="javainsimpleway"; System.out.println(str.substring(6,13)); } } Output simplew We can see that thesubstringreturned, has characters fromspecified starting pointto thespecified end point(end index is exclusive)...
There are two variants of substring method in Java. 1. Only the beginIndex: Stringsubstring(intbeginIndex) Returns the substring starting from the specified indexbeginIndextill the last character of the string. For example:"Chaitanya".substring(2)would return"aitanya". ThebeginIndex is inclusive, ...
Example 1: Java substring() With Only Start Index classMain{publicstaticvoidmain(String[] args){ String str1 ="program";// 1st character to the last character System.out.println(str1.substring(0));// program // 4th character to the last characterSystem.out.println(str1.substring(3));/...
mysql> select substring('example.com', 4, 2); +---+ | substring('example.com', 4, 2) | +---+ | mp | +---+ #从字符串的第 4 个字符位置(倒数)开始取,只取 2 个字符。 mysql> select substring('example.com', -4, 2); +---+ | substring('example.com', -4, 2...