Answer Posted / namita

equals() method is used for comparison. it copares the
content whereas == is used to compare the references.

if the hashcode value is same for two objects equals()
method will return true. but in case of == it is not the
case.

Try following code

String str="Java";
String str1="Ja";
String str2="va";
String str3=str1+str2;
String str4 = new String("Java");
String str5 = str4;
String str6 = new String("Programming");
String str7 = new String(str6);
System.out.println(str3);
System.out.println("str "+str.hashCode());

System.out.println("str3 :- "+str3.hashCode());
System.out.println("str4 :- "+str4.hashCode());
System.out.println("str5 :- "+str5.hashCode());
System.out.println("str6 :- "+str4.hashCode());
System.out.println("str7 :- "+str5.hashCode());


if(str==str3)
System.out.println("str and str3 are equal(==)");
else
System.out.println("str and str3 are not equals
(==)");
if(str.equals(str3))
System.out.println("str and str3 are equals(.equals
())");
else
System.out.println("str and str3 are not equals
(.equals())");


if(str4==str5)
System.out.println("str4 and str5 are equal(==)");
else
System.out.println("str4 and str5 are not equals
(==)");
if(str.equals(str3))
System.out.println("equals");
else
System.out.println("not equals");


if(str6==str7)
System.out.println("str6 and str7 are equal(==)");
else
System.out.println("str6 and str7 are not equals
(==)");
if(str.equals(str3))
System.out.println("equals");
else
System.out.println("not equals");

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