Thomas Abeel

The easiest way to download/mirror a complete website is using WGET and use the mirror option. If you want to see your website with the correct layout and all images, make sure you also supply the --page-requisites flag.

The full command:

wget -p -m -k -K -E http://your.website.com/

See wget --help for an explanation of all command-line options, but these should give you a good start.

Even though it's been a while, AJT 2.8 was released with some more improvements.

LineIterator has become even more versatile. Added some more GUI widgets. Extended the tricks of FrequencyMap to make it more intelligent.

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API

Break line in fixed width with the linux fold command.

I keep forgetting this command, so here goes.

The Linux 'fold' command, can be used to wrap each input line to fit in specified width.

If width is not specified using -w option, by default, 'fold' breaks lines wider than 80 columns. The output is split into as many lines as necessary.

AJT 2.6 adds a peek method to the LineIterator class that allows you to look at the next line, but not yet consume it.

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API documentation

AJT 2.5 adds new functionality to the TimeInterval class, implements a NullStream to simulate /dev/null, adds a LRUCache implementation, fixed a comment identifier bug in LineIterator, adds a new toolkit to work with Sets and fixes a bug in ExtensionManager with respect to upper case extensions.

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API documentation

To change a default Eclipse project to an Eclipse Java project you can follow the steps below.

1. First close the project in Eclipse (right-click project folder > close project)
2. Open the .project file in a text-editor outside Eclipse
3. Add the Java builder and nature to the .project file
4. Save and close file
5. Open project in Eclipse and it now is a Java project

Example:
Original .project file

<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
	<name>A project</name>

Sometimes you want to replace one piece of text with another in all files in a whole directory tree.

*nix and sed to the rescue.


find ./ -type f -exec sed -i ’s/queryString/replaceString/g’ {} \;


AJT 2.2 fixes a bug in the handling of TitledComponent, the component inside the border now properly expands in both directions.

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API documentation

AJT 2.1 adds transparent handling of GZIP files to the LineIterator class.

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API documentation

We all know that Java is a memory hog. This page aims to give you an idea how much it actually hogs without using a profiler.
Primitive types
A reference to an object is in this listing also considered to be a primitive type.

• boolean: 1 byte
• byte: 1 byte
• char: 2 bytes
• short: 2 bytes
• int: 4 bytes
• long: 8 bytes
• float: 4 bytes
• double: 8 bytes
• reference: 4 bytes

Objects
Each Java object uses the following:

• 8 byte Object overhead