CaseFormat Class in Java

The CaseFormat class is a utility class for converting between various ASCII case formats −

Modifier and Type	Method and Description
Object	clone() Overrides Cloneable.
boolean	equals(Object obj) Overrides equals.
String.	format(double number) Specialization of format.
abstract StringBuffer	format(double number, StringBuffer toAppendTo, FieldPosition pos) Specialization of format.
String	format(long number) Specialization of format.
abstract StringBuffer	format(long number, StringBuffer toAppendTo, FieldPosition pos) Specialization of format.

Example

Let us now see an example to implement the CaseFormat class with java file GuavaTester.java −

import com.google.common.base.CaseFormat;
public class GuavaTester {
   public static void main(String args[]) {
      GuavaTester tester = new GuavaTester();
      tester.testCaseFormat();
   }
   private void testCaseFormat() {
      String data = "test_data";
      System.out.println(CaseFormat.LOWER_HYPHEN.to(CaseFormat.LOWER_CAMEL, "test-data"));
      System.out.println(CaseFormat.LOWER_UNDERSCORE.to(CaseFormat.LOWER_CAMEL, "test_data"));
      System.out.println(CaseFormat.UPPER_UNDERSCORE.to(CaseFormat.UPPER_CAMEL, "test_data"));
   }
}

Compile the class using javac compiler as follows −

C:\Guava>javac GuavaTester.java

Now run the GuavaTester to see the result −

C:\Guava>java GuavaTester

Output

This will produce the following output −

testData
testData
TestData