new method

src/Matrix.java

@@ -1,5 +1,6 @@
 import java.io.BufferedReader;
 import java.io.IOException;
+import java.util.Random;
 import java.io.FileReader;
 import java.io.FileNotFoundException;
 
@@ -18,6 +19,7 @@ public class Matrix {
         matrix = new int[rowLength][columnLength];
         this.rowLength = rowLength;
         this.columnLength = columnLength;
+        randomAdjazenzMatrix();
     }
 
     public Matrix(int[][] matrix) {
@@ -79,6 +81,18 @@ public class Matrix {
         }
     }
 
+    public void randomAdjazenzMatrix() {
+        Random r = new Random();
+        for(int columnIndex=0; columnIndex < columnLength; columnIndex++) {
+            for(int rowIndex=0; rowIndex < rowLength; rowIndex++) {
+                if(rowIndex == columnIndex) {
+                    continue;
+                }
+                matrix[rowIndex][columnIndex] = r.nextInt(2);
+            }
+        }
+    }
+
     public String toString() {
         String s = "";
         for(int columnIndex=0; columnIndex < columnLength; columnIndex++) {

src/TestMatrix.java

@@ -1,6 +1,6 @@
 public class TestMatrix {
     public static void main(String[] args) {
-        String pathToProgramRoot = "";
+        String pathToProgramRoot = "/home/rene/projects/Java/graphprogram";
 
         Matrix matrix = new Matrix(pathToProgramRoot + "/csv/graph.csv");
         Matrix scalarProduct;
@@ -12,5 +12,8 @@ public class TestMatrix {
         
         scalarProduct = matrix.multiply(matrix);
         System.out.println("\nScalarProduct A²:  \n" + scalarProduct);
+
+        Matrix bruh = new Matrix(100, 100);
+        System.out.println(bruh);
     }
 }