![]() ![]() ![]() This class also implements three interfaces, such as CharSequence, Comparable, and Serializable. So, in addition to the functionality provided by String class, string can also use all the functionality provided by the Object class and can override them. Implements Serializable, Comparable, CharSequence The general syntax to declare a string class in java is as follows: public final class String When we create a string directly in double quote without using constructor, that string is stored in a special area of heap space known as “string constant pool”. In Java world, String instances/objects are usually just called “strings”.Īs we recall, all strings are stored in heap space when we create string using constructors defined in the class. That is, it is used to store multiple characters.įor example, strings such as “12346” and “hello world” are really instances of this class. String class in Java is used to represent character strings. This string class helps to manage text strings effortlessly in the java program. To support character strings, Java programming language provides a string class. If you have any queries about the substring() method please write it below in the comment section.In an application or a program, it is common to work with the sequence of text character (e.g., for user interactions or data processing). Here, the parameter beginIndex is inclusive while the parameter endIndex is exclusive. Substring(int beginIndex, int endIndex) returns the substring of this string which will start from the character at the beginIndex and will extend till the character at the endIndex - 1. Here, the parameter beginIndex is inclusive. Substring(int beginIndex) returns the substring of this string which will start from the character at the beginIndex and will extend to the end of the string. In Java substring() method has two variants. I.e substring(int beginIndex, int endIndex) will throw an exception ifīeginIndex is negative OR beginIndex > endIndex OR endIndex > string.length() Conclusion Substring(int beginIndex, int endIndex) method will throw IndexOutOfBoundsException exception if beginIndex is negative, or beginIndex larger than the endIndex or endIndex is larger than the length of the string object. ![]() beginIndex The substring will start from the specified beginIndex and it will extend to the end of the string. The first variant of the substring() method accepts only one parameter. We will learn about both variants one by one. substring(int beginIndex, int endIndex).In Java, the substring() method is the overloaded method and it has two variants. The creation of the ‘substring’ depends on the parameter passed to the substring() method. Java substring() method returns a ‘substring’ of the specified string. For instance, “the best of” is a substring of “It was the best of times”. “A substring is a contiguous sequence of characters within a string. Let us understand what does mean by ‘substring’. ![]() I have given two examples with the pictorial explanation to make this concept easy to understand. After reading this article you will be able to use the ‘substring()` method of the String class. The String class in Java is one of the most important classes in Java. ![]()
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