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For 2021 - online Python 3 training - see ((here)).

Our plans were to retire in summer 2020 and see the world, but Coronavirus has lead us into a lot of lockdown programming in Python 3 and PHP 7.
We can now offer tailored online training - small groups, real tutors - works really well for groups of 4 to 14 delegates. Anywhere in the world; course language English.

Please ask about private 'maintenance' training for Python 2, Tcl, Perl, PHP, Lua, etc.
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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Fail Safe Error Handling in Java via Exceptions
MySQL and Java - connectivity past, present, and future thoughts
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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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