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OOP/Java/Lab/Week10/Valid_matrix.java

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+import java.util.*;
+class InvalidMatrixException extends Exception
+{
+    public String toString()
+    {
+        return "InvalidMatrixException:this is an Invalid Matrix";
+    }
+}
+public class Valid_matrix {
+    public static void main(String[] args) {
+        int row,col;
+        Scanner in=new Scanner(System.in);
+        System.out.println("Enter the number of rows and columns");
+        row=in.nextInt();
+        col=in.nextInt();
+        try
+        {
+            if(row!=col)
+            {
+                throw new InvalidMatrixException();
+            }
+            System.out.println("This is a valid matrix");
+        }
+        catch(InvalidMatrixException e)
+        {
+            System.out.println(e.toString());
+        }
+    }
+}