0
String is a pre-defined class in Java. For example:
String s = new String("This is a string");
the variable s is now a String object since it was declared and initialized in the String class.
Wiki User
∙ 14y ago
Aanya Verma
In Java, the concept of a string is fundamental to the language and is used in various contexts. A string is a sequence of characters commonly used to represent words, sentences, or text-based data. In Java, the String class describes strings, providing several methods and features for working with strings.
The important thing to understand about the String class in Java is that it is a class, not an object. This means that when you create a string in Java, you make an instance of the String class. The String class provides several methods for working with strings, such as finding the length of a string, concatenating strings, and searching for substrings.
The syntax for creating a string:
String greeting = new String("Hello, world!");
One of the key benefits of the String class in Java is that it is immutable, meaning that once a string object is created, its value cannot be changed. This makes strings ideal for use when you need to maintain data integrity,
Additionally, because strings are often used in various contexts, making strings mutable would create a number of problems. For example, if two or more references to a string object were pointing to the exact string, modifying the string through one reference would change the string for all references, which could lead to unexpected results.
.
The String class in Java also provides several methods for manipulating strings, such as the substring method, which allows you to extract a portion of a string, or the indexOf method, which will enable you to search for a specific character or substring within a string. Additionally, the String class provides several methods for converting strings to and from other data types, such as the toLowerCase and toUpperCase processes, which convert a string to lowercase or uppercase, respectively.
Another critical aspect of the String class in Java is that it is part of the Java standard library. It is automatically available to all Java programs and does not need to be imported or installed. This makes working with strings in Java very convenient and easy, and it is one of the reasons why strings are such a popular data type in Java.
In conclusion, the String class in Java is an excellent tool for working with strings, and its methods and features make it an essential part of any Java programmer's toolkit. Whether you are working with text data, passwords, or any other text-based data, the String class in Java provides the necessary functionality to get the job done. So if you're working with strings in Java, take advantage of the powerful features of the String class, and remember that strings in Java are class instances, not objects.
Add your answer:
Earn +20 pts
What is string buffer in java?
StringBuffer is java class available in java.lang package which provides mutable String object where String is immutable class. The methods of this class like reverse(), append(),insert() gives facility to insert data of the same object.
What is a string in java?
An object that stores an ordered set of characters (ie. "hello"). The String class represents character strings.
In Java what operator is used to determine if an object is of a particular class type?
The instanceof keyword is used to determine if an object is of a particular class type.Example:Object obj = new String();if(obj instanceof String) {System.out.println("obj is a String!");}
How can you make object from string in java?
String itself is an object dude... If you want an object out of a string then you can do this. Object obj = (Object) str; //str is the String you want to convert to object.
What is the Object class parent?
Object is the topmost class in the Java Class hierarchy. There is no Class above Object. All classes in Java are implicitly derived from Object.
What is string class features in java?
String class is useful to accept inputs from commands prompt as string arguments
Is there class name as object in java?
Yes, the base class for all other Java classes is Object.
What is object class in java?
object class is a super class for all other class...
What does the java new operator do?
The new keyword tells Java that you want to create a new instance of a class by invoking one of the constructors for that class.// Create a new, empty String objectString s1 = new String();// Create a new String object with a different constructorString s2 = new String("howdy");
What are the different between'a' and ''a in java string methods?
The difference between 'a' and "a" anywhere in Java is that 'a' is a primitive char type, while "a" is a String object.
What is topleval class in java?
The top level class in Java is "Object." All other classes are subclasses of Object by default.
Which built in class in java contains only final methods?
String class
