If you are creating an array then there is no difference, however, the following is neater:

String[] suit = {
  "spades", 
  "hearts", 
  "diamonds", 
  "clubs"  
};

But, if you want to pass an array into a method you have to call it like this:

myMethod(new String[] {"spades", "hearts"});

myMethod({"spades", "hearts"}); //won't compile!

You have to make LineType a static class:

public class Outer {

    public static class LineType {
        int id;
        String descr;

        private LineType( int a, String b) {
          this.id = a;
          this.descr = b;
        }
    }

    static LineType[] myList = { 
        new LineType( 1, "first" ),
        new LineType( 2, "second" ),
    };
}

To initialise an array at construction time you can specify a list values in curly braces:

private static final String[] STRING_ARRAY = {"foo", "bar", "baz"};

In my example I have assumed that you won't want to change the instance of array and so have declared it final. You still would be able to update individual entries like so:

 array[0] = "1";

But you won't be able to replace the array with a different one completely. If the values are going to change a lot - especially if the number of values are going to change - then it may be worth considering using List instead.

You can use enum

public enum Color{ 

  RED("red"), GREEN("green");
   final String color;

  Color(String color) {
    this.color=color;
  }

  public String getColor() {
    return color;
  }
 }