JAVA笔试_深圳易思博.docVIP

[考试说明：本试卷为深圳易思博选人的试题，学员不得带走] 一、选择题(2分/题) 1、根据这个类选择所有正确的内部类：（多选） class A { protected int I; A(int i){ This.i=I; } } a. class B{ } b. class B extends A{ } c. class B{ B(){ System.out.println(“i=”+1); } } d. class S{ class A{ } } e. class A{ } 2、下列所给出的声明中，什么会写入标准输出中？（单选） System.out.println(4|7)? a.4 b.5 c.6 d.7 e.0 3、下列有关方法notify()(用于和wait()连接)的正确描述是：（单选） a. if there is more than one thead waiting on a condition,only the thread that has been waiting the longest is notified. b. if there is more than one thead waiting on a condition,there is no way to predict which thread will be notified. c. Notify() is defined in the Thread class. d. It is notstrictly necessary to own the lock for the object you invoke notify() for. e. Notify() should only be invoked form within a while loop. 4、给出下列类的定义，如没有其他实例的引用，method2()能直接访问到：（多选） class A { public int x; private int y; class B { protected void method1(){ } class C { privated void method2() { } } } } class d axtends A{ public float z; } a. The variable x defined in A b. The variable y defined in A c. Method() defined in B d. The variable z defined in d 5、你有一个用ISO 8859-8定义的8位字符串文档，当你要在文本域中写一个显示该文档的应用，而局部编码已经设置成ISO 8859-8时，你如何写一段代码来读取该文档的第一行？ （你有3个可获取的变量） a. InputStreamReader reader=new InputStreamReader(stream,＂8859-8＂); BufferedReader buffer=new BufferedReader(reader); S=buffer.readLine(); b. InputStreamReader reader=new InputStreamReader(stream); BufferedReader buffer=new BufferedReader(reader); S=buffer.readLine(); c. InputStreamReader reader=new InputStreamReader(myfile,＂8859-8＂); BufferedReader buffer=new BufferedReader(reader); S=buffer.readLine(); d. InputStreamReader reader=new InputStreamReader(myfile); BufferedReader buffer=new BufferedReader(reader); S=buffer.readLine(); e. FileReader reader=new FileReader(myfile); BufferedReader buffer=new BufferedReader(reader); S=buffer.readLine(); 6、哪一个对单机程序中的main()方法的声明是错误的？（多选） a. public static void main() b. public static void main(Stri