The company is developing a new______ software program.

下列代码的下划线处应填入相同的类，该类是______。 import javax.swing.*; public class Test{ public static void main(String args[]){ JFrame f=new JFrame(); f.setTitle("Menus"); f.setVisible(true); f.setSize(500,400); ______mb=new______(); f.setJMenuBar(mb); JMenu m=new JMenu("文件"); mb.add(m); JMenuItem mi=new JMenuItem("打开"); m.add(mi); } } A: JMenuItem B: JMenu C: JFrame D: JMenuBar

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

College is a totally new experience of trying new things , getting new knowledge and making new friends.

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"));

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

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"));