CaseFormat class in 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"));
   }
}

C:\Guava>javac GuavaTester.java

C:\Guava>java GuavaTester

testData
testData
TestData