I built a java file with a class that makes dynamics array the class works I am only including the constructor because I am not able to change anything in dynamic class.

public class dynamic{

private T[] ex;

dynamic(int size){

ex= (T[]) new Object[size];

}

}

In a different java file I have a class name example, I need to make temp a 2d dynamic array of dynamic arrays with rows 20 and columns 30.

public class example{

// I cannot change this

private final dynamic> temp;

public example(){

//i want to make a 2d array with row = 20, columns = 30 using temp how would I do that enter code in example()method only.

}

}