Boolean 值為什么定義的位置不一樣,一個(gè)在run方法外,一個(gè)在方法里面
public?class?ArmyRunnable(){ ????volatile?boolean?keepRunning; ????public?void?run(){} ????... }
public?class?ArmyRunnable(){ ????volatile?boolean?keepRunning; ????public?void?run(){} ????... }
2017-03-18
舉報(bào)
2017-05-28
外面定義keepRunning只是為了給keepRunning設(shè)置一個(gè)初始值,如果放在run方法里面,就會(huì)每次都給keepRunning賦值了。
2017-03-18
外面的keepRunning是定義,里面的keepRunning是引用