Programa En Java Gaus Jordan

//**@utora ZENDEJAS ANDRADE MARIA REYNA**
//**LIC.INFORMATICA**
//**MATERIA:ANALISIS NUMERICO 1**
package gauss_jordan;
import java.util.Scanner;
public class Gauss_Jordan {

static Scannerentrada =new Scanner(System.in);
public static void main(String[] args) {


System.out.println ("***METODO DE GAUSS JORDAN***");
doublea011=0,a012=0,a013=0,a014=0,a021=0,a022=0,a023=0,a024=0,a031=0,a032=0,a033=0,a034=0;
double fila1=0,fila2=0,fila3=0,a011P=0,a012P=0,a013P=0,a014P=0,a021P=0,a022P=0,a023P=0,a024P=0;
doublea031P=0,a032P=0,a033P=0,a034P=0,a022s=0,a023s=0,a024s=0,a012s=0,a013s=0,a014s=0,a032s=0,a033s=0,a034s=0;
double a013r=0,a014r=0,a033r=0,a034r=0,a024r=0,a023r=0;

System.out.println("***---METODO GAUSS-JORDANEXCLUSIVO--- PARA MATRICES DE-----3*3 ***");
System.out.println("");
System.out.print("dame el A(1,1): ");
a011=entrada.nextDouble();
System.out.print("dame el A(1,2): ");a012=entrada.nextDouble();
System.out.print("dame el A(1,3): ");
a013=entrada.nextDouble();
System.out.print("dame el A(1,4): ");
a014=entrada.nextDouble();System.out.println("");

System.out.print("dame el A(2,1): ");
a021=entrada.nextDouble();
System.out.print("dame el A(2,2): ");
a022=entrada.nextDouble();
System.out.print("dameel A(2,3): ");
a023=entrada.nextDouble();
System.out.print("dame el A(2,4): ");
a024=entrada.nextDouble();
System.out.println("");

System.out.print("dame el A(3,1):");
a031=entrada.nextDouble();
System.out.print("dame el A(3,2): ");
a032=entrada.nextDouble();
System.out.print("dame el A(3,3): ");
a033=entrada.nextDouble();System.out.print("dame el A(3,4): ");
a034=entrada.nextDouble();
System.out.println("");

a011P=a011/a011;//solucion a 1 de a11
a012P=a012/a011;//renglon dividirlo...