diff --git a/OOP/Java/Lab/matrix_threaded.java b/OOP/Java/Lab/matrix_threaded.java
deleted file mode 100644
index 990bf26..0000000
--- a/OOP/Java/Lab/matrix_threaded.java
+++ /dev/null
@@ -1,161 +0,0 @@
-import java.util.Scanner;
-
-class Matrix {
-    static int[][] matrix;
-
-    Matrix(int rows, int columns) {
-        matrix = new int[rows][columns];
-        Scanner sc = new Scanner(System.in);
-        System.out.println("Enter the values");
-        for (int i = 0; i < rows; i++) {
-            for (int j = 0; j < columns; j++) {
-                matrix[i][j] = sc.nextInt();
-            }
-        }
-    }
-}
-
-class DisplayMatrixThread extends Thread {
-    static int[][] matrix;
-
-    DisplayMatrixThread(Matrix matrixObj) {
-        matrix = Matrix.matrix;
-    }
-
-    public void run() {
-        for (int[] row : matrix) {
-            for (int value : row) {
-                System.out.print(value + "\t");
-            }
-            System.out.println();
-        }
-    }
-}
-
-class TransposeMatrixThread extends Thread {
-    int[][] matrix;
-
-    TransposeMatrixThread(Matrix matrixObj) {
-        matrix = matrixObj.matrix;
-    }
-
-    public void run() {
-        int rows = matrix.length;
-        int columns = matrix[0].length;
-
-        for (int j = 0; j < columns; j++) {
-            for (int i = 0; i < rows; i++) {
-                System.out.print(matrix[i][j] + "\t");
-            }
-            System.out.println();
-        }
-    }
-}
-
-class MaxValueThread extends Thread {
-    static int[][] matrix;
-
-    MaxValueThread(Matrix matrixObj) {
-        matrix = Matrix.matrix;
-    }
-
-    public void run() {
-        int max = matrix[0][0];
-
-        for (int[] row : matrix) {
-            for (int value : row) {
-                if (value > max) {
-                    max = value;
-                }
-            }
-        }
-
-        System.out.println("Maximum value in the matrix: " + max);
-    }
-}
-
-class PrincipalDiagonalThread extends Thread {
-    static int[][] matrix;
-
-    PrincipalDiagonalThread(Matrix matrixObj) {
-        matrix = Matrix.matrix;
-    }
-
-    public void run() {
-        int rows = matrix.length;
-        int columns = matrix[0].length;
-
-        System.out.print("Principal Diagonal Elements: ");
-        for (int i = 0; i < Math.min(rows, columns); i++) {
-            System.out.print(matrix[i][i] + " ");
-        }
-        System.out.println();
-    }
-}
-
-class NonDiagonalThread extends Thread {
-    static int[][] matrix;
-
-    NonDiagonalThread(Matrix matrixObj) {
-        matrix = Matrix.matrix;
-    }
-
-    public void run() {
-        int rows = matrix.length;
-        int columns = matrix[0].length;
-
-        System.out.print("Non-Diagonal Elements: ");
-        for (int i = 0; i < rows; i++) {
-            for (int j = 0; j < columns; j++) {
-                if (i != j) {
-                    System.out.print(matrix[i][j] + " ");
-                }
-            }
-        }
-        System.out.println();
-    }
-}
-
-class ThreadMatrix {
-    public static void main(String[] args) {
-        Scanner sc = new Scanner(System.in);
-        System.out.println("Enter the no. of rows and columns");
-        int rows = sc.nextInt();
-        int columns = sc.nextInt();
-        Matrix matrixObj = new Matrix(rows, columns);
-
-        DisplayMatrixThread t1 = new DisplayMatrixThread(matrixObj);
-        TransposeMatrixThread t2 = new TransposeMatrixThread(matrixObj);
-        MaxValueThread t3 = new MaxValueThread(matrixObj);
-        PrincipalDiagonalThread t4 = new PrincipalDiagonalThread(matrixObj);
-        NonDiagonalThread t5 = new NonDiagonalThread(matrixObj);
-
-        try {
-            t1.start();
-            System.out.println("\nThread t1 is alive: " + t1.isAlive());
-            t1.join();
-            t2.start();
-            System.out.println("\nThread t2 is alive: " + t2.isAlive());
-            t2.join();
-            t3.start();
-            System.out.println("\nThread t3 is alive: " + t3.isAlive());
-            t3.join();
-            t4.start();
-            System.out.println("\nThread t4 is alive: " + t4.isAlive());
-            t4.join();
-            t5.start();
-            System.out.println("\nThread t5 is alive: " + t5.isAlive());
-            t5.join();
-        } catch (InterruptedException e) {
-            e.printStackTrace();
-        }
-
-        System.out.println("\nThread t1 is alive: " + t1.isAlive());
-        System.out.println("Thread t2 is alive: " + t2.isAlive());
-        System.out.println("Thread t3 is alive: " + t3.isAlive());
-        System.out.println("Thread t4 is alive: " + t4.isAlive());
-        System.out.println("Thread t5 is alive: " + t5.isAlive());
-        
-        System.out.println("\nMain thread exits.");
-    }
-}
\ No newline at end of file