Java string intern and literal

by

They have the same end result, but they are not the same (they’ll produce different bytecode; the new String("foo").intern() version actually goes through those steps, producing a new string object, then interning it).

Two relevant quotes from String#intern:

When the intern method is invoked, if the pool already contains a string equal to this String object as determined by the equals(Object) method, then the string from the pool is returned. Otherwise, this String object is added to the pool and a reference to this String object is returned.

All literal strings and string-valued constant expressions are interned.

So the end result is the same: A variable referencing the interned string “foo”.

More Related Contents:

  1. Regex for converting xml tags key to camel case
  2. Remove duplicate phrases [closed]
  3. How to split a string with any whitespace chars as delimiters
  4. What is the purpose of the expression “new String(…)” in Java?
  5. A quick and easy way to join array elements with a separator (the opposite of split) in Java [duplicate]
  6. How does the String class override the + operator?
  7. How to format strings in Java
  8. How to convert Strings to and from UTF8 byte arrays in Java
  9. Left padding a String with Zeros [duplicate]
  10. How to find nth occurrence of character in a string?
  11. Using Java to find substring of a bigger string using Regular Expression
  12. How to use java.String.format in Scala?
  13. How is String concatenation implemented in Java 9?
  14. Reversing a String with Recursion in Java
  15. How do I split a string in Java?
  16. Trim characters in Java
  17. Printing reverse of any String without using any predefined function?
  18. Java split string to array [duplicate]
  19. In Java, for a string x, what is the runtime cost of s.length()? Is it O(1) or O(n)?
  20. Preferred Idiom for Joining a Collection of Strings in Java
  21. How do format a phone number as a String in Java?
  22. Java String.replace/replaceAll not working
  23. Integer.toString(int i) vs String.valueOf(int i) in Java
  24. How can I parse a String to BigDecimal? [duplicate]
  25. Verify if String is hexadecimal
  26. Is there a memory-efficient replacement of java.lang.String?
  27. String equals and == with String concatenation [duplicate]
  28. Compare two hex strings in Java?
  29. What is a Java String’s default initial value?
  30. Behavior of String literals is confusing

Leave a Comment