The indexOf() method returns the index of the first occurrence of the specified character/substring within the string. Example class Main { public static void main(String[] args) { String str1 = "Java is fun"; int result; // getting index of character 's' result = str1.indexOf('s...
where to begin looking in this string. Returns Boolean trueif the character sequence represented by the argument is a prefix of the substring of this object starting at indextoffset;falseotherwise. The result isfalseiftoffsetis negative or greater than the length of thisStringobject; otherwise the...
1,Java中的String位于lang包下,通过阅读源码可知 publicfinalclassStringimplementsjava.io.Serializable, Comparable<String>, CharSequence {/**The value is used for character storage.*/privatefinalcharvalue[];/**Cache the hash code for the string*/privateinthash;//Default to 0 String实现了三个接口,并...
Read more: Java String | String.charAt(index) Method with Example 阅读更多: Java String | 带示例的String.charAt(index)方法 5)s1.indexOf(s2) (5) s1.indexOf(s2)) This function is used to get the starting index of any substring. Here, if substring s2 exists in the string s1, it will...
Each character is associated with a numerical index, starting from 0 up to n-1, where n is the length of String. In this article, we will learn how to use the index to find the beginning of a given string in Java. Checking the Beginning of a Java String To check the beginning of...
{ return list; } // If str1 is the same as str2, add 0 as the starting index if (str1.equals(str2)) { list.add(0); return list; } // Creating a HashMap to store character frequencies in str2 HashMap<Character, Integer> map = new HashMap<>(); for (char c : str2....
Get the Last Character of a String in Java Using substring()In the below example code, the last character of exampleString is g. We will use a method of the String class called substring() that takes out a substring as its name suggests. The substring(startingIndex) method takes an ...
boolean startsWith(substring, fromIndex)– returnstrueif the String begins withsubstringstarting from the specified indexfromIndex. The following Java program checks if a string starts with the specified prefixes. StringblogName="howtodoinjava.com";booleanresult=blogName.startsWith("how");// truebool...
*@paramtoffset where to begin looking in this string. *@return{@codetrue} if the character sequence represented by the * argument is a prefix of the substring of this object starting * at index {@codetoffset}; {@codefalse} otherwise. ...
2.1. Getting a Substring Starting at a Specific Character In case the position needs to be dynamically calculated based on a character orStringwe can make use of theindexOfmethod: assertEquals("United States of America", text.substring(text.indexOf('(') +1, text.indexOf(')'))); ...