title: Java - format double value as dollar amount
body: <p>I need to format the double "amt" as a dollar amount println("$" + dollars + "." + cents) such that there are two digits after the decimal.</p>
  
  <p>What is the best way to go about doing so?</p>
  
  <pre><code>if (payOrCharge &lt;= 1)
  {
      System.out.println("Please enter the payment amount:");
      double amt = keyboard.nextDouble();
      cOne.makePayment(amt);
      System.out.println("-------------------------------");
      System.out.println("The original balance is " + cardBalance + ".");
      System.out.println("You made a payment in the amount of " + amt + ".");
      System.out.println("The new balance is " + (cardBalance - amt) + ".");
  }
  else if (payOrCharge &gt;= 2)
  {
      System.out.println("Please enter the charged amount:");
      double amt = keyboard.nextDouble();
      cOne.addCharge(amt);
      System.out.println("-------------------------------");
      System.out.println("The original balance is $" + cardBalance + ".");
      System.out.println("You added a charge in the amount of " + amt + ".");
      System.out.println("The new balance is " + (cardBalance + amt) + ".");
  }
  </code></pre>