package environ; /** Test for JDK >= 1.1 */ public class TestJDK11 { public static void main(String[] a) { // Check for JDK >= 1.1 try { Class.forName("java.lang.reflect.Constructor"); } catch (ClassNotFoundException e) { String failure = "Sorry, but this version of MyApp needs \n" + "a Java Runtime based on Java JDK 1.1 or later"; System.err.println(failure); throw new IllegalArgumentException(failure); } System.out.println("Happy to report that this is JDK1.1"); // rest of program would go here... return; } }