Can we access or query the Java String intern (constant) pool?

by

You cannot directly access the String intern pool.

As per Javadocs String intern pool is:

A pool of strings, initially empty, is maintained privately by the
class String.

However String objects can be added to this pool using String’s intern() method.

java.lang.String.intern() returns an interned String, that is, one that has an entry in the global String pool. If the String is not already in the global String pool, then it will be added.

Programmatically you can follow this approach:

  1. Declare Set<String> StringConstantPool = new HashSet<String>();
  2. call String.intern()
  3. Add returned String value into this pool StringConstantPool

More Related Contents:

  1. When does the pool change?
  2. can't input value for string?
  3. Java String split removed empty values
  4. How can I pad a String in Java?
  5. Read/Write String from/to a File in Android
  6. Comparing strings with == which are declared final in Java
  7. In Java, how do I check if a string contains a substring (ignoring case)? [duplicate]
  8. Android Split string
  9. How do I convert CamelCase into human-readable names in Java?
  10. String comparison and String interning in Java
  11. Is it better practice to use String.format over string Concatenation in Java?
  12. How to convert/parse from String to char in java?
  13. What is the simplest way to convert a Java string from all caps (words separated by underscores) to CamelCase (no word separators)?
  14. Java converting int to hex and back again
  15. Java String.split() Regex
  16. How can I invert the case of a String in Java?
  17. Java: String split(): I want it to include the empty strings at the end [duplicate]
  18. How can I safely encode a string in Java to use as a filename?
  19. How do I convert a String to a BigInteger?
  20. comparison of two Strings doesn’t work in android [duplicate]
  21. Exact difference between CharSequence and String in java [duplicate]
  22. How to search a string in another string? [duplicate]
  23. Java: Why can String equality be proven with ==?
  24. How can I read comma separated values from a text file in Java?
  25. How to check whether given string is a word
  26. What’s the best way to check if a String contains a URL in Java/Android?
  27. What’s the quickest way to compare strings in Java?
  28. Random element from string array [closed]
  29. How String Literal Pool Works
  30. How to correctly compute the length of a String in Java?

Leave a Comment