public class Initializers {
    public static void main(String[] args) {

	new Test().print1(); // output: 0123456789
	new Test().print2(); // output: 01234

    }
}

class Test {

    public final int N=10;
    private int[] x=new int[N];

    { for (int i=0; i<N; i++) x[i]=i; }

    public static final int L=5;
    private static int[] y=new int[L];;

    static { for (int i=0; i<L; i++) y[i]=i; }

    public void print1() {
	for (int i=0; i< x.length; i++) 
	    System.out.print(x[i]);
	System.out.println();
    }

    public void print2() {
	for (int i=0; i< y.length; i++) 
	    System.out.print(y[i]);
	System.out.println();
    }

}