Add-on for string validation. ( TestProject [deprecated] )
String valueToTest = "";
Validation val = Validation.getValidator();
val.add(valueToTest, "Display Name", "required|min:4|either:value1,value 2,next value to test");
if(val.fail()) {
for(String errorMsg : val.getErrorMessages)
System.out.println("errorMsg");
}