How the allocation will be done in multi dimensional arrays like 4 dimensional arrays, 3 dimensional arrays, how four dimensional arrays will be related to objects or array in two/three dimensional arrays. Where can i get the detail information about array allocations.

Iam scoring 50%-80% in mock tests, but how will be the questions in real scjp exam, will the questions similar to the ones which we are doing in mock tests.

Remember that you are declaring arrays of arrays, so something like int[m][n] will allocate m spaces in an array. Each of these spaces will be references to arrays with n elements.