JAVA, please help with this method.

/**

* This method initializes the boolean mines array passed in. A true value for

* an element in the mines array means that location has a mine, false means

* the location does not have a mine. The MINE_PROBABILITY is used to determine

* whether a particular location has a mine. The randGen parameter contains the

* reference to the instance of Random created in the main method.

* Access the elements in the mines array with row then column (e.g., mines[row][col]).

* Access the elements in the array solely using the actual size of the mines

* array passed in, do not use constants.

* A MINE_PROBABILITY of 0.3 indicates that a particular location has a

* 30% chance of having a mine. For each location the result of

* randGen.nextFloat() < Config.MINE_PROBABILITY

* determines whether that location has a mine.

* This method does not print out anything.

* @param mines The array of boolean that tracks the locations of the mines.

* @param randGen The reference to the instance of the Random number generator

* created in the main method.

* @return The number of mines in the mines array.

*/

public static int placeMines(boolean[][] mines, Random randGen) {

return -99;

}