Java认证考试问答题每日一练(2019.04.28)

问答题
Click the 'Select and Place' button.Place the events in the order they occur.
答案：
问答题
Click the ’Select and Place’ button.Place the events in the order they occur.
答案：
问答题
Click the 'Select and Place' button.Place the events in the order they occur.
答案：
问答题
What is the output？
答案：
ajvajavac
问答题
What is the value of the variable output at line 24？
答案：
13423