String

String is an object that represents sequence of char. String is immutable in Java

Creating String Object:

Method 1: (Using String literal)

char[] ch = {'v','i','c','k','y'};

String s = new String(ch);

Method 2: (Using new keyword)

String s = new String("Vicky");

Method 3: (Using String literal)

String s = "Vicky";

Methods in String

concat(), split(), length(), substring()

String Pool

String is special class in java. String Pool in java is a pool of Strings stored in Java Heap Memory. We can create String object using new operator as well as providing values in double quotes.

String s1 = "Vicky";

String s2 = "Vicky";

if(s1 == s2)
    System.out.println("Equal"); //Prints equal.

String s3 = new String("Vicky");

String s4 = new String("Vicky");

if(s3 == s4)
    System.out.println("Equal");
else
    System.out.println("Not Equal"); //Prints Not Equal