Classes don't have keyword "new" as a personal method or anything like that. It is the Java language itself that has the keyword "new". So in other words you put "new" in the code the compiler would recognize it and instantiate a new Object.

http://docs.oracle.com/javase/specs/jls/se7/html/jls-3.html#jls-3.9- this link is the documentation of Java language, in section 3.9 it shows all the keywords.

Edit: Like others are saying, what the snippet of code in your question indicates an inner class, so for instance, like it says in http://docs.oracle.com/javase/tutorial/java/javaOO/nested.html

public class ShadowTest {

public int x = 0;

class FirstLevel {

    public int x = 1;

    void methodInFirstLevel(int x) {
        System.out.println("x = " + x);
        System.out.println("this.x = " + this.x);
        System.out.println("ShadowTest.this.x = " + ShadowTest.this.x);
    }
}

public static void main(String... args) {
    ShadowTest st = new ShadowTest();
    ShadowTest.FirstLevel fl = st.new FirstLevel();
    fl.methodInFirstLevel(23);
}
}

The following is the output of this example:

x = 23
this.x = 1
ShadowTest.this.x = 0

This shows that the innerclass or class B(FirstLevel) is like or similar to the outer class's variables and methods(for it is associated with the instance of the outer class) of class A(ShadowTest).