what would be the answer above these three questions?

Also, why does this code make an error when I compiled it on dr.java?

Please help me out :(

Thanks

What should the following code print? int[ ] a = {1,2,3}; int [ ] b = {4,5); int [ ] c = {6,7,8,9); int [ ][ ] z = {a,b,c); for(int i 0; i