Further embellishment of exception classes : Exceptions « Language Basics « Java
Further embellishment of exception classes
// : c09:ExtraFeatures.java
// Further embellishment of exception classes.
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
class MyException2 extends Exception {
private int x;
public MyException2() {
}
public MyException2(String msg) {
super(msg);
}
public MyException2(String msg, int x) {
super(msg);
this.x = x;
}
public int val() {
return x;
}
public String getMessage() {
return "Detail Message: " + x + " " + super.getMessage();
}
}
public class ExtraFeatures {
public static void f() throws MyException2 {
System.out.println("Throwing MyException2 from f()");
throw new MyException2();
}
public static void g() throws MyException2 {
System.out.println("Throwing MyException2 from g()");
throw new MyException2("Originated in g()");
}
public static void h() throws MyException2 {
System.out.println("Throwing MyException2 from h()");
throw new MyException2("Originated in h()", 47);
}
public static void main(String[] args) {
try {
f();
} catch (MyException2 e) {
e.printStackTrace();
}
try {
g();
} catch (MyException2 e) {
e.printStackTrace();
}
try {
h();
} catch (MyException2 e) {
e.printStackTrace();
System.err.println("e.val() = " + e.val());
}
}
} ///:~
