You are required to add the following methods to the (1 points) Appending a given value to the buffer. class. (2 points) Inserting a given double value to a given position in the buffer. When the buffer is full, the method should return false, and the buffer is not changed. (2 points) Deleting the number in the given position. When the buffer is empty, the method should return false Ac and the buffer is still empty. (1 point) Displaying all (valid) elements. Go class RealBuff static final int max_size = 100; double[] content; int current_size; // the default maximum size of the buffer // the content of the buffer // the number of valid elements RealBuff() { } // initializing an empty buffer of the default maximum size // initializing an empty buffer of the maximum size given by n Real Buff (final int n) } // initializing a buff which is a copy of buff Real Buff (final RealBuff buff) { }