Answer:
An observation: Java does not support true multi-dimensional arrays; rather, it supports 1-dimensional arrays, where each element can itself be another 1-dimensional array. The difference is the way memory is allocated, where a[i][j] differs from a[i,j].
Explanation:
Select the text you want to alter.
Press Shift+F3. Word changes the case of the selected text.
Continue pressing Shift+F3 until the case is the way you want it.
hope this helps