What is String in Java ?

 In Java, a String is a sequence of characters that is used to represent text. It is one of the most commonly used data types in Java programming.

In Java, a String is represented by the String class, which provides various methods for manipulating and working with strings. Strings in Java are immutable, which means once a String object is created, its contents cannot be changed.

Strings in Java can be created using the string literal syntax, which involves enclosing the characters in double quotes. For example:

String str = "Hello World";

Strings can also be created using the new keyword and the String constructor, which takes an array of characters as its argument. For example:

char[] chars = {'H', 'e', 'l', 'l', 'o', ' ', 'W', 'o', 'r', 'l', 'd'};
String str = new String(chars);

Java provides many useful methods for working with strings, such as substring(), length(), indexOf(), toUpperCase(), toLowerCase(), and more. These methods can be used to manipulate and transform strings in various ways.

Overall, strings are an essential part of Java programming and are used extensively in most Java applications.