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|Interview Questions and Answers|
|Frequently asked in Infosys India|
|Ans. String pool (String intern pool) is a special storage area in Java heap. When a string is created and if the string already exists in the pool, the reference of the existing string will be returned, instead of creating a new object and returning its reference.|
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|Like Discuss Correct / Improve  java   oops   string   string class   string pool   heap memory Asked in 31 Companies intermediate   frequent|
Try 2 Question(s) Test
|Why Char array is preferred over String for storing password?|
|What are different ways to create String Object? Explain.|
|How does making string as immutable helps with securing information ? How does String Pool pose a security threat ?|
|Which memory segment holds String Pool in Java ?|
|How and Why Strings are interned in Java ?|
| What will be the output of following code|
Integer x = 1;
Integer y = 2;
System.out.println(x == y);
What if you change 1 to "1" and Integer to String?
| What will be result of following code and why|
Integer int1 = 1;
Integer int2 = 1;
String str1 = new String("str");
String str2 = new String("str");
String str3 = "str";
String str4 = "str";
System.out.println(int1 == int2);
System.out.println(str1 == str2);
System.out.println(str3 == str4);
|What is the purpose of String Pool ? Don't you think it's a performance overhead to have unnecessary check for string in string pool ?|
|Why string pool concept has been introduced in string ?|