What is the conversation mainly about What is the conversation mainly about A．Online shopping. B．New technology. C．Computers. D．Book stores. A: Online shopping. B: New technology. C: Computers. D: Book stores.

有关new关键字的描述正确的是哪项？ A.创建对象实例的时候可以不使用new关键字 B．new所创建的对象不占用内存空间 C．new会调用类的构造器来创建对象 D．new所创建的对象一定存在引用变量 A: 创建对象实例的时候可以不使用new关键字 B: new所创建的对象不占用内存空间 C: new会调用类的构造器来创建对象 D: new所创建的对象一定存在引用变量

The original name of New York is . A: New Hampshire B: New Amsterdam C: New Jersey D: New England

New York used to be known as _____? A: New Hampshire B: New Jersey C: New Netherlands D: New England

There is _________in today's newspaper. A: new anything B: new something C: anything new D: something new

实例化对象正确的是( )。 A: A a = new A(); B: A a = new A(1); C: A a = new A; D: A a = new A(1,2);

新建一个流对象，下列（ ）选项的代码是错误的。 A: new BufferedWriter(new FileWriter("a.txt")); B: new BufferedReader(new FileInputStream("a.dat")); C: new DataOutputStream(new FileOutputStream("a.txt")); D: new ObjectInputStream(new FileInputStream("a.dat"));

Do you like my picture? It's ______ . A: a new B: one new C: new one D: a new one

There is （） in today’s newspaper. A: new anything B: new something C: anything new

​要读一个较大的文件，下列创建对象的方法中哪个是最合适的？（ ）‍ A: new FileInputStream(“myfile.dat”); B: new InputStreamReader(new FileInputStream(“myfile.dat”)); C: new BufferedReader(new InputStreamReader(new FileInputStream(“myfile.dat”); D: new RandomAccessFile raf=new RandomAccessFile(new File(“myfile.dat”,”rw”));