In Java how does one turn a String into a char or a char into a String?

java string char
David picture David · Mar 11, 2010 · Viewed 176.9k times · Source

Is there a way to turn a char into a String or a String with one letter into a char (like how you can turn an int into a double and a double into an int)? (please link to the relevant documentation if you can).

How do I go about finding something like this that I'm only vaguely aware of in the documentation?

Answer

polygenelubricants picture polygenelubricants · Mar 11, 2010 
char firstLetter = someString.charAt(0);
String oneLetter = String.valueOf(someChar);

You find the documentation by identifying the classes likely to be involved. Here, candidates are java.lang.String and java.lang.Character.

You should start by familiarizing yourself with:

  • Primitive wrappers in java.lang
  • Java Collection framework in java.util

It also helps to get introduced to the API more slowly through tutorials.

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