How do I convert CamelCase into human-readable names in Java?

Question

I'd like to write a method that converts CamelCase into a human-readable name.

Here's the test case:

public void testSplitCamelCase() {

    assertEquals("lowercase", splitCamelCase("lowercase"));

    assertEquals("Class", splitCamelCase("Class"));

    assertEquals("My Class", splitCamelCase("MyClass"));

    assertEquals("HTML", splitCamelCase("HTML"));

    assertEquals("PDF Loader", splitCamelCase("PDFLoader"));

    assertEquals("A String", splitCamelCase("AString"));

    assertEquals("Simple XML Parser", splitCamelCase("SimpleXMLParser"));

    assertEquals("GL 11 Version", splitCamelCase("GL11Version"));

}

Answer 1

You can do it using org.apache.commons.lang.StringUtils

StringUtils.join(

     StringUtils.splitByCharacterTypeCamelCase("ExampleTest"),

     ' '

);