question: validate that the argument condition is true ; otherwise throwing an exception with the specified message . this method is useful when validating according to an arbitrary boolean expression , such as validating a primitive number or using your own custom validation expression . validate.istrue i > 0.0 , `` the value must be greater than zero : % d '' , i ; for performance reasons , the long value is passed as a separate parameter and appended to the exception message only in the case of an error . concode_field_sep PlaceHolder placeHolder concode_field_sep T notNull concode_elem_sep boolean isEmpty concode_elem_sep String unescape concode_elem_sep String concat concode_elem_sep void onlyOneIsTrue concode_elem_sep boolean onlyOneIsTrueNonThrow concode_elem_sep String hex concode_elem_sep String toString concode_elem_sep String join concode_elem_sep String join concode_elem_sep void closeQuietly concode_elem_sep T notEmpty concode_elem_sep String escape concode_elem_sep int indexOf
target: void function ( boolean arg0 , String arg1 ) { if ( arg0 == false ) { throw new IllegalArgumentException ( arg1 ) ; } }