In Java, a string is a sequence of characters that is widely used in Java programming. Strings are objects in Java, and the Java platform provides the String class to create and manipulate strings. The String class has thirteen constructors that allow you to provide the initial value of the string using different sources, such as an array of characters. Once created, a String object cannot be changed because the String class is immutable.
The Java String class provides a lot of methods to perform operations on strings such as compare(), concat(), equals(), split(), length(), replace(), compareTo(), intern(), substring() etc. For example, the length of a string can be found with the length() method. The java.lang.String class implements Serializable, Comparable and CharSequence interfaces.
In summary, a string in Java is a sequence of characters that is an object of the class java.lang.String. It is immutable, and the Java platform provides the String class to create and manipulate strings.
