// Given a 2D matrix matrix, find the sum of the elements inside the rectangle defined by its upper left corner (row1, col1) and lower right corner (row2, col2). // 1.The matrix is only modifiable by ...

(Hint: review theProject 1 template for a good start for this project.)4.All Java source code should be written using Google Java style guide.5.Prepare, conduct and document a test plan verifying your ...