0, 3, null, options, options[0]); The array named options defines the three fields to display in the dialog box. The array is then passed as the seventh of eight parameters required by the JOptionPane ...

This Java runtime exception happens when the wrong type of object is placed into an array. In the example below, a BigInteger array is created, followed by an attempt to add a Double. The Double does ...

In Java, some array types are covariant and/or contravariant. In the case of covariance, this means that if T is compatible to U, then T[] is also compatible to U[].