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For 2023 (and 2024 ...) - we are now fully retired from IT training.
We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk.

Lisa and I (Graham) now live in what was our training centre in Melksham - happy to meet with former delegates here - but do check ahead before coming round. We are far from inactive - rather, enjoying the times that we are retired but still healthy enough in mind and body to be active!

I am also active in many other area and still look after a lot of web sites - you can find an index ((here))
What methods are available on this Java object?

Q: "What can I do with an ArrayIndexOutOfBoundsException?" for example ...

A: Use the javap utility to ask what methods are available on the class ... and descent into its base class structure too, using further javap calls:

wizard:java graham$ javap java.lang.ArrayIndexOutOfBoundsException
Compiled from "ArrayIndexOutOfBoundsException.java"
public class java.lang.ArrayIndexOutOfBoundsException extends java.lang.IndexOutOfBoundsException{
public java.lang.ArrayIndexOutOfBoundsException();
public java.lang.ArrayIndexOutOfBoundsException(int);
public java.lang.ArrayIndexOutOfBoundsException(java.lang.String);
}
 
wizard:java graham$ javap java.lang.IndexOutOfBoundsException
Compiled from "IndexOutOfBoundsException.java"
public class java.lang.IndexOutOfBoundsException extends java.lang.RuntimeException{
public java.lang.IndexOutOfBoundsException();
public java.lang.IndexOutOfBoundsException(java.lang.String);
}
 
wizard:java graham$ javap java.lang.RuntimeException
Compiled from "RuntimeException.java"
public class java.lang.RuntimeException extends java.lang.Exception{
static final long serialVersionUID;
public java.lang.RuntimeException();
public java.lang.RuntimeException(java.lang.String);
public java.lang.RuntimeException(java.lang.String, java.lang.Throwable);
public java.lang.RuntimeException(java.lang.Throwable);
}
 
wizard:java graham$ javap java.lang.Exception
Compiled from "Exception.java"
public class java.lang.Exception extends java.lang.Throwable{
static final long serialVersionUID;
public java.lang.Exception();
public java.lang.Exception(java.lang.String);
public java.lang.Exception(java.lang.String, java.lang.Throwable);
public java.lang.Exception(java.lang.Throwable);
}
 
wizard:java graham$ javap java.lang.Throwable
Compiled from "Throwable.java"
public class java.lang.Throwable extends java.lang.Object implements java.io.Serializable{
public java.lang.Throwable();
public java.lang.Throwable(java.lang.String);
public java.lang.Throwable(java.lang.String, java.lang.Throwable);
public java.lang.Throwable(java.lang.Throwable);
public java.lang.String getMessage();
public java.lang.String getLocalizedMessage();
public java.lang.Throwable getCause();
public synchronized java.lang.Throwable initCause(java.lang.Throwable);
public java.lang.String toString();
public void printStackTrace();
public void printStackTrace(java.io.PrintStream);
public void printStackTrace(java.io.PrintWriter);
public synchronized native java.lang.Throwable fillInStackTrace();
public java.lang.StackTraceElement[] getStackTrace();
public void setStackTrace(java.lang.StackTraceElement[]);
}
 
wizard:java graham$ javap java.lang.Object
Compiled from "Object.java"
public class java.lang.Object{
public java.lang.Object();
public final native java.lang.Class getClass();
public native int hashCode();
public boolean equals(java.lang.Object);
protected native java.lang.Object clone() throws java.lang.CloneNotSupportedException;
public java.lang.String toString();
public final native void notify();
public final native void notifyAll();
public final native void wait(long) throws java.lang.InterruptedException;
public final void wait(long, int) throws java.lang.InterruptedException;
public final void wait() throws java.lang.InterruptedException;
protected void finalize() throws java.lang.Throwable;
static {};
}


I can feel a bit of scripting coming on (Jython would seem appropriate!) if I wanted to do that sort of thing on a regular basis!
(written 2010-07-08, updated 2010-07-09)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
J710 - Java - Extending Classes and More
  [656] Think about your design even if you don't use full UML - (2006-03-24)
  [831] Comparison of Object Oriented Philosophy - Python, Java, C++, Perl - (2006-08-13)
  [1066] Final, Finally and Finalize - three special words in Java - (2007-02-05)
  [1217] What are factory and singleton classes? - (2007-06-04)
  [1294] An example of Java Inheritance from scratch - (2007-08-00)
  [1501] Java - using super to call a method in the parent class - (2008-01-10)
  [1538] Teaching Object Oriented Java with Students and Ice Cream - (2008-02-12)
  [1556] Java - a demonstration of inheritance on just one page - (2008-02-26)
  [1819] Calling base class constructors - (2008-10-03)
  [2185] Abstract Classes - Java - (2009-05-16)
  [2434] Abstract classes, Interfaces, PHP and Java - (2009-10-03)
  [2604] Tips for writing a test program (Ruby / Python / Java) - (2010-01-29)
  [3047] What is a universal superclass? Java / Perl / Python / Other OO languages - (2010-11-13)
  [4334] Splitting out code into name blocks for clarity and reusability - (2014-11-30)
  [4366] Changing what operators do on objects - a comparison across different programming languages - (2014-12-26)
  [4394] Philosophy behind object design - and how I applied in to a Java example - (2015-01-14)
  [4419] Java Inheritance example - group of classes - step by step - (2015-02-08)
  [4422] Objects - from physical to virtual or abstract - Java - (2015-02-10)


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Some other Articles
Changing with weather and seasons
Writing a server in Java
Fail Safe Error Handling in Java via Exceptions
MySQL and Java - connectivity past, present, and future thoughts
What methods are available on this Java object?
Using java, javac, jar, and CLASSPATH - a simple example
The healthy option - away from the private car
Park and Ride at Batheaston - will it solve Wiltshires Ills?
Two sides of the coin
Train Services - Melksham to Bath and Bristol (and airport)
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This is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price.

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