Java 中有兩種迴圈，一種是while 迴圈(while loop) ，另一種則是for 迴圈(for loop) ，兩種迴圈可以互相替代，端視自己喜歡用哪一種囉！我們先來看看while 迴圈的寫法 ... <看更多>

The for-each loop, added in Java 5 (also called the "enhanced for loop"), is equivalent to using a java.util.Iterator --it's syntactic sugar for the same thing. ... <看更多>