Tutorial:
Examples:
Super Junior
Mindless Behavior
What are you thoughts on boy bands?
Do you want to help me start one?
Use the contents of a jar file.
Posted by Larry
on December 3, 2011
No comments
How to view the contents of a jar file.
Command
// From the cmd line jar -tvf fileName.jar
Example Output
C:\BrowserGUI\dist>jar -tvf BrowserGUI.jar
0 Sat Nov 26 21:46:28 PST 2011 META-INF/
106 Sat Nov 26 21:46:26 PST 2011 META-INF/MANIFEST.MF
39313 Sat Nov 26 21:46:26 PST 2011 GUIAboutTab.class
39952 Sat Nov 26 21:46:26 PST 2011 GUIFrame.class
45354 Sat Nov 26 21:46:26 PST 2011 GUITabbedPane.class
5244 Sat Nov 26 21:46:26 PST 2011 GUImain.class
691 Sat Nov 26 21:46:26 PST 2011 NewJFrame$1.class
509 Sat Nov 26 21:46:26 PST 2011 NewJFrame$2.class
15458 Sat Nov 26 21:46:26 PST 2011 NewJFrame.class
Check out the Java Package Tutorial for more infomation.
Code of the Day: DOS Open an existing file or create it if it doesn’t exist
Posted by Larry
on December 1, 2011
No comments
REM filename: openAndORCreateFileTXT.bat rem\ >> file.txt && file.txt
The following will open a existing file named file.txt. However, it if doesn’t exist then it will create it for you then open it. This is very useful.
“rem\” Let’s you return a empty character.
“>> file.txt” appends the returned value on the left hand side, which in this case is nothing.
“&& file.txt” once the left hand operation is done, then open the file ( file.txt).
Code of the Day: Groovy Print all Methods of an object
Posted by Larry
on November 27, 2011
No comments
Groovy Code
/** * @function printAllMethods * @purpose Prints an objects class name and then list the associated class functions. */ void printAllMethods( obj ){ println "class ${obj.getClass().name} functions:"; if( !obj.metaClass && obj.getClass() ){ printAllMethods( obj.getClass() ); return; } obj.metaClass.methods.name.unique().each{ print it+"(); "; } println ""; }
Example Code
// Filename: printAllMethodsExample.groovy void printAllMethods( obj ){ println "class ${obj.getClass().name} functions:"; if( !obj.metaClass && obj.getClass() ){ printAllMethods( obj.getClass() ); return; } obj.metaClass.methods.name.unique().each{ print it+"(); "; } println ""; } printAllMethods( "string" ); println ''; printAllMethods( [1] ); println ''; printAllMethods( [1:1] ); println '';
Output
class java.lang.String functions: equals(); getClass(); hashCode(); notify(); notifyAll(); toString(); wait(); charAt(); codePointAt(); codePointBefore(); codePointCount(); compareTo(); compareToIgnoreCase(); concat(); contains(); contentEquals(); copyValueOf(); endsWith(); equalsIgnoreCase(); format(); getBytes(); getChars(); indexOf(); intern(); isEmpty(); lastIndexOf(); length(); matches(); offsetByCodePoints(); regionMatches(); replace(); replaceAll(); replaceFirst(); split(); startsWith(); subSequence(); substring(); toCharArray(); toLowerCase(); toUpperCase(); trim(); valueOf(); class java.util.ArrayList functions: equals(); getClass(); hashCode(); notify(); notifyAll(); toString(); wait(); add(); addAll(); clear(); contains(); containsAll(); isEmpty(); iterator(); remove(); removeAll(); retainAll(); size(); toArray(); get(); indexOf(); lastIndexOf(); listIterator(); set(); subList(); clone(); ensureCapacity(); trimToSize(); class java.util.LinkedHashMap functions: class java.lang.Class functions: equals(); getClass(); hashCode(); notify(); notifyAll(); toString(); wait(); clear(); containsKey(); containsValue(); entrySet(); get(); isEmpty(); keySet(); put(); putAll(); remove(); size(); values(); clone();
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