Several - I don't believe there is a fixed limit. The idea is that, depending on the specific exception that occured, you carry out different actions.
A try block can have multiple catch blocks, each handling a different type of exception. Be careful about the order of laying the exceptions. Using Exception at the top will catch everything that is derived from it, thereby missing the other specfic exception catches. And there can also be only one finally block.
1km is 1000 blocks. 1 block is 1 meter. 1 block is exactly 1x1x1.
350 and under are small blocks. There is also a 400 small block but there is a 400 large block. 396 and up are big blocks.
1 block
0.5 miles will be about a block in the city. If you are in the country 0.5 miles might be only half a block.
An enderman is 3 blocks tall, and 1 block wide.
What sort of blocks? Childrens' building blocks? If so, how big is each block?
there are 13 red blocks
2700 8x8x16 block
A block is not a standard measure.
It matters how long the blocks are. It matters how long each block is.
500 blocks. One block is equal to one meter.