Implement the following class program in Java. public Bank () // default constructor starts checking and savings account with zero dollars. public Bank (double c, double 3) // parameter creates an object with c dollars in checking and s dollars in savings. public double getChecking ) // returns the checking account balance public double getSavings ) // returns the savings account balance public double getCombined () // returns the combined balance of the checking and savings account public void changeChecking (double amount) // alters the balance of the checking account by the amount parameter public void changeSavings (double amount) // alters the balance of the savings account by the amount parameter public void closeChecking ) // alters the checking account balance to zero public void closeSavings () // alters the savings account balance to zero Then, write a test program to execute the class