name this this class notation

[Jano Frank]

What is the name of this class notation bellow?

class Pair<L, H> {

private L low;
private H high;

L getLow() { return low;}
.
.
.
}

usage: new Pair<String, String>();

Thank you!

[Steve Luke]

Jano Frank wrote:What is the name of this class notation bellow?

class Pair<L, H> {
...

Thank you!

That is 'Generics'. You can learn more about them here: http://docs.oracle.com/javase/tutorial/java/generics/index.html

[Campbell Ritchie]

Jano Frank wrote:What is the name of this class notation bellow?

 . . .
usage: new Pair<String, String>();

Thank you!

That looks like a label. But it might not compile in its present state.

[Jano Frank]

No, sorry, it was just an example, not a code that would compile, I wanted to show how they instantiate an object from the class and added 'usage' note into the "code".

[Campbell Ritchie]

Not like that. You can add it as part of a documentation comment, or in an if-else.

/**
 * Start the whole application
 * Usage: java Foo 123 456
 *@param args The command line arguments. Two arguments, which represent the starting
 * and ending values as <code>int</code>s, required.
 *@throws NumberFormatException if the arguments cannot be parsed to an <code>int</code>
 */
public static void main(String[] args)
{
   if (args.length == 0)
   {
      System.err.printf("Usage: java Foo 123 456%nTwo int numbers required.%n");
   }
   else
   {
      new Foo(Integer.parseInt(args[0], Integer.parseInt(args[1])).start();
   }
}