SWEEP INT on radar panel is the abbreviation of ________ ．A.sweep introductionB.sweep interestC.sweep intentionD.sweep intensity
SWEEP INT on radar panel is the abbreviation of ________ ．
A.sweep introduction
B.sweep interest
C.sweep intention
D.sweep intensity
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本程序的功能是读取用户输入的整数a、b，单击按钮“计算”，则计算出a和b数的和，并显示计算的结果。请将程序补充完整。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.*;import javax.swing.*;public class simple{public static void main{String[] args){ExampleFrame. frame=new ExampleFrame();frame.______(JFrame.EXIT_ON_CLOSE);frame.show();}}class ExampleFrame. extends JFrame{private JPanel panel;public static final int DEFAULT_WIDTH=250;public static final int DEFAULT_HEIGHT=250;public ExampleFrame(){Init();setTitle("welcome");setSize(DEFAULT_WIDTH,DEFAULT_HEIGHT);Container contentPane=getContentPane();contentPane.add(panel);}private void init(){JLabel la1=new JLabel("输入整数a:");JLabel la2=new JLabel ("输入整数b:");final JTextField num1=new JTextField(10);final JTextField num2=new JTextField(10);JButton but=new JButton("计算");final JLabel res=new JLabel("结果:");but.addActionListener(______{public void actionPerformed(ActionEvent event){String str=new String();String s1=num1.getText();String s2=num2.getText();try{int a=Integer.parseInt(s1);int b=Integer.parseInt(s2);str=String.valueOf(a +b);}catch(Exception e){str=e.getMessage();}res.setText ("结果:"+str);}});panel=new JPanel();panel.setLayout(new FlowLayout(FlowLayout.LEFT));panel.add(la1);panel.add(num1);panel.add(la2);panel.add(hum2);panel.add(but);panel.add(res);}}
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以下关系表达式中,其值为False的是A.XYZ"there"D.Inte 以下关系表达式中，其值为False的是A．XYZ＜"XYz"B．VisualBasic="visualbasic"C．the＜＞"there"D．Integer＞"Int"
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将一个容器panel1放到容器frame1中的方法是A．frame．insert(panel1)”B．frame．add(panel1)C．frame．add Panel(panel1)D．framel．insertJPanel(panel1)
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