The wicketkeeper changes his position after every over because the bowling and the batting ends are switched after every six balls. The act of switching the ends is done to keep the game fair. In addition, it also aims to minimize any advantage that players might get due to the following extraneous factors:Ground Dimensions-Certain boundaries of ground may be shorter or longer than the rest.Wind Direction-Wind blowing even in a slightly intense pace can help both; the batsman as well as the bowler.The Condition of the Pitch − Usually an innings of an ODI match consists of 50 overs, T20-20 ... Read More

Not all South Africans are called Proteas; it's just their national cricket team which is called by that alternate name. Protea is the name of a flower that has pink and yellow petals and it is the national flower of South Africa. It's a tradition in certain cricket playing countries to be called by names of some of their national symbols.Take the case of the South African rugby team - they are called Springboks after the spectacular antelope from the wilderness of this country, which is among the fastest land animals on earth and is known to leap up to ... Read More

A stack and a heap are used for memory allocation in Java. However, the stack is used for primitive data types, temporary variables, object addresses etc. The heap is used for storing objects in memory.Stacks and heaps in Java are explained in more detail as follows −Stack in JavaStacks are used to store temporary variables, primitive data types etc. A block in the stack exists for a variable only as long as the variable exists. After that, the block data is erased and it can be used for storing another variable.