First develop commit. Adding all existing files.

test/math/MatrixTest.java

@@ -0,0 +1,37 @@
+package math;
+
+import math.matrix.Matrix;
+import exception.IllegalDimensionException;
+
+public class MatrixTest {
+   public static void main(String[] args) throws IllegalDimensionException { 
+      Matrix A = new Matrix(new double[][] { { 0,  1,  1 },
+                                             { 2,  4, -2 },
+                                             { 0,  3, 15 } }); 
+
+      Matrix b = new Matrix(new double[][] { {  4 },
+                                             {  2 },
+                                             { 36 } });
+      Matrix x = A.solve(b);
+      Matrix residual = A.times(x).minus(b);
+      double rnorm = residual.normInf();
+
+      System.out.println("A");
+      A.print(9, 6);                // printf("%9.6f");
+
+      System.out.println("b");
+      b.print(9, 6);
+
+      System.out.println("x");
+      x.print(9, 6);
+      System.out.println(x);
+
+      System.out.println("residual");
+      residual.print(9, 6);
+      
+      System.out.println("rnorm");
+      System.out.println(rnorm);
+
+   }
+
+}