CaseFormat is a utility class to provide conversion between various ASCII char formats.
Class Declaration
Following is the declaration for com.google.common.base.CaseFormat class −
@GwtCompatible public enum CaseFormat extends Enum<CaseFormat>
Enum Constants
| Sr.No | Enum Constant & Description |
|---|---|
| 1 | LOWER_CAMELJava variable naming convention, e.g., “lowerCamel”. |
| 2 | LOWER_HYPHENHyphenated variable naming convention, e.g., “lower-hyphen”. |
| 3 | LOWER_UNDERSCOREC++ variable naming convention, e.g., “lower_underscore”. |
| 4 | UPPER_CAMELJava and C++ class naming convention, e.g., “UpperCamel”. |
| 5 | UPPER_UNDERSCOREJava and C++ constant naming convention, e.g., “UPPER_UNDERSCORE”. |
Methods
| Sr.No | Method & Description |
|---|---|
| 1 | Converter<String,String> converterTo(CaseFormat targetFormat)Returns a Converter that converts strings from this format to targetFormat. |
| 2 | String to(CaseFormat format, String str)Converts the specified String str from this format to the specified format. |
| 3 | static CaseFormat valueOf(String name)Returns the enum constant of this type with the specified name. |
| 4 | static CaseFormat[] values()Returns an array containing the constants of this enum type, in the order they are declared. |
Methods Inherited
This class inherits methods from the following classes −
- java.lang.Enum
- java.lang.Object
Example of CaseFormat Class
Create the following java program using any editor of your choice in say C:/> Guava.
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"));
}
}
Verify the Result
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
See the result.
testData testData TestData
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