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Java™
by example!
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How do I convert a String to lowercase or uppercase?
The following example is self-explanatory:
public class TestProg
{
public static void main(String args[])
{
String s = "Hello, World!";
String supper = s.toUpperCase();
String slower = s.toLowerCase();
System.out.println(supper); // prints out: HELLO, WORLD!
System.out.println(slower); // prints out: hello, world!
}
}
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Note: for internationalization purposes, the methods toUpperCase() and toLowerCase() perform some checking for languages as German and Turkish to do the correct conversion.
If you need these functions in time-critical applications, you might want to consider rewriting them without these checkings.
Further Information
Author of answer: unknown
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