java实验：编写程序，从键盘上输入两个数。将第一个数除以第二个数并显示结果；处理所有可能的异常。 编写一个java程序，通过键盘输入两个整数，求两数的和的程序...
java 1.\u7f16\u5199\u7a0b\u5e8f,\u4ece\u952e\u76d8\u4e0a\u8f93\u5165\u4e24\u4e2a\u6570.\u5c06\u7b2c\u4e00\u4e2a\u6570\u9664\u4ee5\u7b2c\u4e8c\u4e2a\u6570\u5e76\u663e\u793a\u7ed3\u679c;\u5904\u7406\u6240import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class FuctJFrame extends JFrame implements ActionListener{
/**
*
*/
private static final long serialVersionUID = 1L;
JLabel jlabel=new JLabel("\u8bf7\u8f93\u5165\u4e24\u4e2a\u6570:");
JLabel jlabel1=new JLabel();
JTextField jtextfield=new JTextField();
JButton jbutton=new JButton("=");
JTextField jtextfield1=new JTextField();
public FuctJFrame(){
setSize(300,300);
setTitle("\u6c42\u4e24\u6570\u76f8\u9664");
setLocation(251,251);
getContentPane().setLayout(null);
jlabel.setBounds(new Rectangle(100,50,100,20));
jtextfield.setBounds(new Rectangle(100,80,100,20));
jtextfield1.setBounds(new Rectangle(100,110,100,20));
jbutton.setBounds(new Rectangle(115,140,70,20));
jlabel1.setBounds(new Rectangle(120,200, 100, 20));
jlabel1.setForeground(Color.RED);
jbutton.addActionListener(this);
getContentPane().add(jlabel);
getContentPane().add(jtextfield);
getContentPane().add(jbutton);
getContentPane().add(jtextfield1);
getContentPane().add(jlabel1);
}
public void actionPerformed(ActionEvent e){
try{
double sum;
sum=Double.parseDouble(jtextfield.getText())/Double.parseDouble(jtextfield1.getText());
jlabel1.setText(""+sum);
if(Double.parseDouble(jtextfield1.getText())==0.0)
jlabel1.setText("\u9664\u6570\u4e0d\u80fd\u4e3a0");
}catch(Exception ex){
JOptionPane.showMessageDialog(this,"\u8bf7\u8f93\u5165\u6570\u5b57");
}
}
public static void main(String[]arqs){
FuctJFrame x=new FuctJFrame();
x.setVisible(true);
}
}
\u6253\u5b57\u4e0d\u6613\uff0c\u5982\u6ee1\u610f\uff0c\u671b\u91c7\u7eb3\u3002
\u901a\u8fc7\u952e\u76d8\u8f93\u5165\u4e24\u4e2a\u6574\u6570\uff0c\u6c42\u4e24\u6570\u7684\u548c\u7684Java\u7a0b\u5e8f\u5982\u4e0b\u56fe\u6240\u793a\uff1a
\u7f16\u5199Java\u7a0b\u5e8f\u65f6\uff0c\u5e94\u6ce8\u610f\u4ee5\u4e0b\u51e0\u70b9\uff1a
\u5927\u5c0f\u5199\u654f\u611f\uff1aJava\u662f\u5927\u5c0f\u5199\u654f\u611f\u7684\uff0c\u8fd9\u5c31\u610f\u5473\u7740\u6807\u8bc6\u7b26Hello\u4e0ehello\u662f\u4e0d\u540c\u7684\u3002
\u7c7b\u540d\uff1a\u5bf9\u4e8e\u6240\u6709\u7684\u7c7b\u6765\u8bf4\uff0c\u7c7b\u540d\u7684\u9996\u5b57\u6bcd\u5e94\u8be5\u5927\u5199\u3002\u5982\u679c\u7c7b\u540d\u7531\u82e5\u5e72\u5355\u8bcd\u7ec4\u6210\uff0c\u90a3\u4e48\u6bcf\u4e2a\u5355\u8bcd\u7684\u9996\u5b57\u6bcd\u5e94\u8be5\u5927\u5199\uff0c\u4f8b\u5982 MyFirstJavaClass\u3002
\u65b9\u6cd5\u540d\uff1a\u6240\u6709\u7684\u65b9\u6cd5\u540d\u90fd\u5e94\u8be5\u4ee5\u5c0f\u5199\u5b57\u6bcd\u5f00\u5934\u3002\u5982\u679c\u65b9\u6cd5\u540d\u542b\u6709\u82e5\u5e72\u5355\u8bcd\uff0c\u5219\u540e\u9762\u7684\u6bcf\u4e2a\u5355\u8bcd\u9996\u5b57\u6bcd\u5927\u5199\uff0c\u4f8b\u5982myFirstJavaClass\u3002
\u6e90\u6587\u4ef6\u540d\uff1a\u6e90\u6587\u4ef6\u540d\u5fc5\u987b\u548c\u7c7b\u540d\u76f8\u540c\u3002\u5f53\u4fdd\u5b58\u6587\u4ef6\u7684\u65f6\u5019\uff0c\u4f60\u5e94\u8be5\u4f7f\u7528\u7c7b\u540d\u4f5c\u4e3a\u6587\u4ef6\u540d\u4fdd\u5b58\uff08\u5207\u8bb0Java\u662f\u5927\u5c0f\u5199\u654f\u611f\u7684\uff09\uff0c\u6587\u4ef6\u540d\u7684\u540e\u7f00\u4e3a.java\u3002\uff08\u5982\u679c\u6587\u4ef6\u540d\u548c\u7c7b\u540d\u4e0d\u76f8\u540c\u5219\u4f1a\u5bfc\u81f4\u7f16\u8bd1\u9519\u8bef\uff09\u3002
\u4e3b\u65b9\u6cd5\u5165\u53e3\uff1a\u6240\u6709\u7684Java \u7a0b\u5e8f\u7531public static void main(String[]args)\u65b9\u6cd5\u5f00\u59cb\u6267\u884c\u3002
import javax.swing.*;
import java.awt.event.*;
public class FuctJFrame extends JFrame implements ActionListener{
/**
*
*/
private static final long serialVersionUID = 1L;
JLabel jlabel=new JLabel("请输入两个数:");
JLabel jlabel1=new JLabel();
JTextField jtextfield=new JTextField();
JButton jbutton=new JButton("=");
JTextField jtextfield1=new JTextField();
public FuctJFrame(){
setSize(300,300);
setTitle("求两数相除");
setLocation(251,251);
getContentPane().setLayout(null);
jlabel.setBounds(new Rectangle(100,50,100,20));
jtextfield.setBounds(new Rectangle(100,80,100,20));
jtextfield1.setBounds(new Rectangle(100,110,100,20));
jbutton.setBounds(new Rectangle(115,140,70,20));
jlabel1.setBounds(new Rectangle(120,200, 100, 20));
jlabel1.setForeground(Color.RED);
jbutton.addActionListener(this);
getContentPane().add(jlabel);
getContentPane().add(jtextfield);
getContentPane().add(jbutton);
getContentPane().add(jtextfield1);
getContentPane().add(jlabel1);
}
public void actionPerformed(ActionEvent e){
try{
double sum;
sum=Double.parseDouble(jtextfield.getText())/Double.parseDouble(jtextfield1.getText());
jlabel1.setText(""+sum);
if(Double.parseDouble(jtextfield1.getText())==0.0)
jlabel1.setText("除数不能为0");
}catch(Exception ex){
JOptionPane.showMessageDialog(this,"请输入数字");
}
}
public static void main(String[]arqs){
FuctJFrame x=new FuctJFrame();
x.setVisible(true);
}
}
绛旓細鏂规硶涓锛歩mport java.util.Scanner;public class Prictise { public static void main(String...strings){ System.out.println("璇疯緭鍏ヤ竴涓笉澶氫簬9浣嶇殑姝ｆ暣鏁帮細");try{ Scanner input = new Scanner(System.in);int info=input.nextInt();String str=info+" ";int count=str.length()-1;if(...
绛旓細public class test3{ public static void main(String []args) { String FilePath="d:\\javaTest\\output.txt";writeAll(FilePath);} private static void writeAll(String filePath) { File output = new File(filePath);String outputStr = "";Scanner sc = new Scanner(System.in);System...
绛旓細鍒╃敤Java搴旂敤绋嬪簭缂栧啓瑕佹眰杈撳叆涓や釜鏁存暟骞惰绠椾袱涓暟鎹箣鍜屽叿浣撴搷浣滄楠ゅ涓嬶細import java.util.Scanner public class Test { public static void main(String[] args) { System.out.print("璇疯緭鍏ョ涓涓暣鏁帮細")Scanner s=new Scanner(System.in)int a=s.nextInt()System.out.print("璇疯緭鍏ョ浜屼釜...
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绛旓細java浠ｇ爜 import java.util.Scanner;public class Main { / param args / public static void main(String[] args) { Scanner input = new Scanner(System.in);int readint[] = new int[3];readint[0] = input.nextInt();readint[1] = input.nextInt();readint[2] = input.nextInt()...
绛旓細import java.util.Scanner;public class Demo01 { public static void main(String[] args) { System.out.println("璇疯緭鍏5涓暣鏁:");Scanner s = new Scanner(System.in);int[] number = new int[5];for (int i = 0; i < 5; i++) { System.out.println("璇疯緭鍏ョ" + (i + 1...
绛旓細import java.io.BufferedReader;import java.io.InputStreamReader;public class MaoPaoPaiXu {public static void main(String[] args) throws Exception {System.out.println("璇疯緭鍏ヨ杈撳叆鐨勬鏁存暟涓暟锛");BufferedReader br = new BufferedReader(new InputStreamReader(System.in));String num = ...
绛旓細import java.io.File;import java.io.IOException;import java.io.PrintWriter;import java.util.Scanner;public class BubbleTest { / param args / public static void main(String[] args) { Scanner scan=new Scanner(System.in);int length=20;int[] array=new int[length];for(int i=0;i<...
绛旓細2015-06-12 java绋嬪簭 灏嗙敤鎴蜂粠閿洏杈撳叆鐨10琛屽瓧绗︿覆瀛樺叆鏂囦欢,鐒跺悗杈... 2 2013-06-12 缂栧啓涓涓Java绋嬪簭,灏嗙敤鎴峰湪鍛戒护琛岀獥鍙ｉ敭鐩樿緭鍏ョ殑鍐呭鍐欏埌涓... 1 2014-11-02 鍐欎竴涓java灏忕▼搴:缂栧啓涓涓瓧绗︾晫闈㈢殑java绋嬪簭,鎺ュ彈鐢... 6 2015-05-23 缂栧啓涓涓java绋嬪簭,浠庨敭鐩杈撳叆鏂囧瓧鍒颁竴涓枃鏈枃浠朵腑,姣忎竴琛...
