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class strbuffer2

{

public static void main(String[] args)

{

String a=new String("Avnish");

String b=new String("Avnish");

System.out.println(a==b);//false

System.out.println(a.equals(b));//true

StringBuffer a1=new StringBuffer("Avnish");

StringBuffer b1=new StringBuffer("Avnish");

System.out.println(a1==b1);//false

System.out.println(a1.equals(b1));//false

//string immutable

String nam=new String("yadav");

nam.concat("avnish");

System.out.println(nam);

System.out.println(nam.concat("avnish"));

// string mutable

StringBuffer n=new StringBuffer("hello");

n.append("avnish");

System.out.println(n);//helloavnish

//StringBuffer ob=new StringBuffer(1000);//1000 store area

StringBuffer ob=new StringBuffer("hello");

ob.append("avnish");

System.out.println(ob.capacity());

System.out.println(ob);

}