A new shopping center on the north side will have ().A.five hundred more than shopsB.as more than five hundred shopsC.five hundred shops more thanD.more than five hundred shops

A.Direction d = NORTH;

B.Nav.Direction d = NORTH;

C.Direction d = Direction.NORTH;

D.Nav.Direction d = Nav.Direction.NORTH;

下列程序在Frame中设定BorderLayout布局管理器，选择正确的语句填入程序的横线处。 import java.awt.*; public class ex43 extends Frame { public static void main(String[] args) { ex43 bj = new ex43("BorderLayout"); ______ obj.add("North", new Button("North")); obj.add("South", new Button("Sourth")); obj.add("East", new Button ("East")); obj.add("West", new Button ("West")); obj. add ("Center", new Button ( "Center" ) ); obj.pack(); obj. setVisible (true); } public ex43(String str) { super (str); } }

A．obj.setLayout(new BorderLayout());

B．setLayout(new Borderkayout());

C．setLayout(BorderLayout());

D．obj.setLayout(BorderLayout());

以下程序中，使用适当的布局管理器，在Frame框的“North”位置添加一句提示信息，在“South”位置添加一个单行文本框，在这个文本框中输入的内容将会显示在“Center”位置。运行结果如下图所示。

注意：请勿改动main()主方法和其他已有语句内容，仅在横线处填入适当语句。

import java.awt.*;

import java.awt.event.*;

public class Example2_6 extends Frame

{

public static void main(String [] argv)

{

Example2_6 frame. = new Example2_6("Example2_6");

frame, init ();

frame.setSize(300, 300);

frame, show ();

}

public Example2_6(String name)

{

super (name);

addWindowListener (new WindowAdapter ()

{ public void windowClosing(WindowEvent e)

{ __________;

}

} );

}

public void init()

{

setLayout (new ___________);

Label labelTitle = new Label("在文本框中输入字符串，可以在Frame. 中间显示");

Label showTextLabel = new Label();

TextField textField = new TextField("请在这里输入字符串");

textField.addActionListener (new AddStringListener(showTextLabel, textField) );

add("North", labelTitte);

add("Center", showTextLabel);

add("South", textField);

}

}

class AddStringListener implements ActionListener

{

Label label;

TextField textField;

public AddStringListener(Label label, TextField textField)

{

this. label = label;

this.textField = textField;

}

public void actionPerformed(ActionEvent e)

{

label, setText (textField. getText ());

}

}

5类双绞线制作的交叉网线，下面哪一个图形描述的管脚对应关系正确()。

A.交叉网线示例SIDE1SIDE 21234567812345678

B.交叉网线示例SIDE1SIDE 21234567812345678

C.交叉网线示例SIDE1SIDE 21234567812345678

在程序中，使用适当的布局管理器，在Frame框的North位置添加一句提示信息，在South位置添加一个单行文本框，在这个文本框中输入的内容将会显示在Center位置。运行结果如下图所示。

注意：请勿修改main()主方法和其他已有语句内容，仅在横线处填入适当语句。

import java.awt.*;

import java.awt.event.*;

public class simple extends Frame

{

public static void main(String[] args)

{

simple frame=new simple("simple");

frame.init();

frame.setSize(300,300);

frame.show();

}

public simple(String name)

{

super(name);

addWindowListener(new WindowAdapter()

{ public void windowClosing(WindowEvent e)

{______;

}

} );

}

public void init()

{

setLayout(new______);

Label labelTitle=new Label("在本文框中输入字符串, 可以早Frame中间显示");

Label showTextLabel=new Label();

TextField textField=new TextField("请在这里输入字符串");

textField.addActionListener(new AddStringListener(showTextLabel,

textField));

add("North", labelTitle);

add("Center", showTextLabel);

add("South", textField);

}

}

class AddStringListener implements ActionListener

{

Label label;

TextField textField;

public AddStringListener(Label label, TextField textField)

{

this.label=label;

this.textField=textField;

}

public void actionperformed(ActionEvent e)

{

label.setText(textField.getText());

}

}