Being a long-term Semantic Web aficionado, I have used Apache Jena with Eclipse several times for manipulating and parsing RDF models and originally installed it by downloading the Windows-compatible distro from http://jena.apache.org/download/index.cgi and and import the libs into my Eclipse project. I have recently found an Eclipse Library Plugin for Jena 2.0  and I was rather excited to be able to work with Jena  without fetching the latest Jena distro and adding it to your Build Path, but the excitement did not last long….The plugin is unfortunately for Jena 2.0 and it does not seem to be compatible with most recent Eclipse versions (e.g. Mars 4.5). Oh well, back to the known route, then!:)

(Related) Interesting resources:

Using Jena with Eclipse

JenaTools

Say I type “sout”, the intellisense should expand it to “System.out.println()”. Is there a way to adding such templates?

Source: How to add shortcut keys for java code in eclipse – Stack Overflow

This is probably one of the most common Java programming interview question and there are at least 4 different approaches that can be taken to tackle it. We will illustrate them by presenting some examples in Java.

1) Use the built-in StringBuffer reverse() method:

[sourcecode language=”java” wraplines=”false” collapse=”false”]
public class ReverseStringBuffer
{
public static void main(String args[])
{
String originalString = "MyAwesomeString";
String reversedString = new StringBuffer(originalString).reverse().toString();
System.out.println("This is the original String " + originalString +
"n" + "This is the reversed String " + reversedString);
}
}
[/sourcecode]

2) Use the built-in StringBuilder reverse() method:
[sourcecode language=”java” wraplines=”false” collapse=”false”]
public class ReverseStringBuilder
{
public static void main(String args[])
{
String anotherOriginalString = "AmazingString";
StringBuilder anotherReversedString =
new StringBuilder(anotherOriginalString).reverse();
System.out.println("This is the original String " + anotherOriginalString +
"n" + "This is the reversed String " + anotherReversedString);
}
}
[/sourcecode]

3) Convert a String into a Char array and loop through each character.

[sourcecode language=”java” wraplines=”false” collapse=”false”]
public class ReverseStringCharArray
{
public static void main(String args[])
{
String myString = "ThisIsMyAwesomeString";
char[] stringToChar = myString.toCharArray();
System.out.println(stringToChar.length);
for(int i = stringToChar.length – 1; i >= 0; i–)
{
System.out.print(stringToChar[i]);
}
[/sourcecode]

[sourcecode language=”java” wraplines=”false” collapse=”false”]
A similar implementation can be re-written as an utility:

public class ReverseStringCharArray
{
public static void main(String args[])
{
String term = "HappyString";
//Here we are calling the reverse utility method
String reversedTerm= reverse(term);
System.out.println("This is the original String " + term +
"n" + "This is the reversed String " + reversedTerm);
}

public static String reverse(String sourceTerm)
{
if(sourceTerm == null || sourceTerm.isEmpty())
{
return sourceTerm;
}
String reversedString = "";
for(int i = source.length() -1; i>= 0; i–)
{
reversedString = reversedString + source.charAt(i);
System.out.println("This prints the reversed string " +
reversedString + " n " +
" whereas this prints the individual character " + source.charAt(i));
}
return reversedString;
}
}
[/sourcecode]

4) Use recursion to reverse the entered String. This method returns the reverse of the string passed in by appending the first character (sourceTern.charAt(0)) to the remainder of the String itself (str.substring(1)). If the String is less or equal to 1 character, then the recursion is halted.

[sourcecode language=”java” wraplines=”false” collapse=”false”]
public class ReverseStringRecursiveMethod
{
public static void main(String args[])
{
String term = "AnotherString";
//prints the result of the call to the recursive method
System.out.println(recursiveMethod(term));
}

public static String recursiveMethod(String sourceTerm)
{
if ( (null == sourceTerm) || (sourceTerm.length() <= 1) )
{
return sourceTerm;
}

return recursiveMethod(sourceTerm.substring(1)) + sourceTern.charAt(0);
}
}
[/sourcecode]

Print this and have it in front of your when using RStudio. It is priceless! Source: Keyboard Shortcuts – RStudio Support