String in Java

C/C+ treats string as an array of  character, But in Java string is an object of String class, String is a class as well as data type in Java, Here Example of String data type is: String s=”Indian”,Here ‘s’ is a variable of data type ‘String’.

In Java we can create a string in 3 different process.

In first process JVM creates an object and stores the string to that object,Object is referenced by s1 variable in this example.Eg: String s1="My name is Arun";

Second process is we create a String class object by allocating some memory using new operator and stores the string in the object.Eg: String s2=new String("I am from India");

Last one  is we create an array of character type and we pass the array to string object created. Eg: char arr[]={'i',' ','l','i','k','e',' ','j','a','v','a'}; //array of type String with characters

String s3=new String(arr);  //passing the arr to string object.
Example of creation of string in Java:

class CreateString
{
public static void main(String args[])
{
String s1="My name is Arun";
String s2=new String("I am from India");
char arr[]={'i',' ','l','i','k','e',' ','j','a','v','a'};
String s3=new String(arr);

System.out.println(s1);
System.out.println(s2);
System.out.println(s3);
}
}

O/P:
My name is Arun
I am from India

i like java

N.B:Java is enriched with various String class(in java.lang package) methods.We will discuss those String class methods with example in next post.

If you like this post please read 14 String Class methods with Example also.