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SVN red book

I normally use Subclipse plugin for Eclipse for SVN operations. It really makes life easy. I am a novice when it comes to performing svn operations using SVN commands. I found a very useful resource for that: HTML version of SVN red book (for subversion 1.5) Hope you find this useful :)

Parameter vs Argument

The parameter is the local variable in the method and the argument is the caller-supplied value/reference. In the given example, the parameter for doSomething is 'a' and the argument is 22. public static void doSomething(int a) { System.out.println("The argument was " + a); } public static void main(String[] s) { doSomething(22); }

Autoboxing example

You can’t put a primitive value into a collection since collections can only hold object references. To do so, you need to box primitive values into the appropriate wrapper class. When retriving, you get an object out of the collection and you need to unbox the it. Java 5 provides autoboxing and unboxing feature that eliminates the pain. import java.util.ArrayList; public class Autoboxing { public static void main ( String [] args ) { ArrayList list = new ArrayList () ; for ( int i = 0 ; i 10 ; i++ ){ list.add ( i ) ; } int sum = 0 ; for ( Integer j : list ){ sum += j; } System.out.printf ( "The sum is %d." , sum ) ; } }