Java String _ Real Time Explanation

Java String Real Time Interview Questions
Java String _ Real Time Explanation
What is String in Java?
different ways of creating string objects in java
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//Strings, which are widely used in Java programming, are a sequence of characters.
//In the Java programming language, strings are objects.
//Strings are constant(immutable); their values cannot be changed after they are created.

//Create String object in constant Pool and 'str' will refer that object
String str="kiran";
//str1 also refer same object created in constant Pool.
String str1="kiran";
//str2 object created in heap memory not in constant pool
String str2=new String("kiran");
//str3 object created in heap memory not in constant pool
String str3=new String("kiran");

System.out.println(str.hashCode()+" "+str1.hashCode()+ " "+str2.hashCode()+" "+str3.hashCode());

//str,str1 refering same object str==str1
if(str==str3.intern())
{
System.out.println("str,str same");
}else System.out.println("str,str diffrent");
//str2,str3 refering diffrent objects in heep so str2!=str3
if(str2==str3)
{
System.out.println("str2,str3 same");
}else System.out.println("str2,str3 diffrent");
//if want to move heap to constant pool we use str3.intern()



}