package temp;
/*1.編寫一個Application，接收用戶輸入的一行字符串，并重復輸出三行。
?*/
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import javax.swing.*;
public class Input extends JFrame implements ActionListener {
?/**
? *
? */
?private static final long serialVersionUID = 1L;
?static JTextField text_in;
?static JTextArea text_out;
?static JButton in;
?String s;
?public static void pain() {
??Input frame = new Input();
??frame.setLayout(null);
??frame.setTitle("Input");
??text_in = new JTextField("please input a string", 1);
??text_in.setBounds(10,10,300,30);
??frame.add(text_in);
??in = new JButton("in");
??in.setBounds(10,150,50,30);
??frame.add(in);
??in.addActionListener(frame);
??text_out = new JTextArea(3, 993);
??text_out.setBounds(10,50,300,90);
??frame.add(text_out);
??frame.pack();
??frame.setVisible(true);
??
?}
?public static void main(String args[]) throws IOException {
??Input.pain();
?}
?public void actionPerformed(ActionEvent e) {
??// TODO Auto-generated method stub
??if (e.getActionCommand().equals("in"))
???s = text_in.getText();
??text_out.setText(s + "\n" + s + "\n" + s);
?}
}
/*1.編寫一個Application，接收用戶輸入的一行字符串，并重復輸出三行。
?*/
import java.io.*;
public class Input {
?public static void main(String args[]) throws IOException {
??BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
??String s = bf.readLine();
??// for(int i=0;i<3;i++)
??// System.out.println(s);
??System.out.print(s + "\n" + s + "\n" + s);
?}
}
package temp;
/*2.編寫一個程序由用戶從鍵盤輸入整數(shù)，計算它們的和，并顯示結果。
?* 當用戶輸入了一個整數(shù)并按下回車鍵后，該數(shù)被程序讀入并累加到總和中。
?*/
import java.io.*;
public class InputSum {
?static int sum;
?public static void main(String args[]) throws IOException {
??BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
??String ss = bf.readLine();
??String input=ss;
??int s = Integer.parseInt(ss);
??for (;;) {
???if (!ss.endsWith("q")) {
????s = Integer.parseInt(ss);
????sum = sum + s;
???} else {
????System.out.print(input+"="+sum);
????System.exit(0);
???}
???ss = bf.readLine();
???if(!ss.endsWith("q"))input+="+"+ss;
??}
?}
}
package temp;
/*2.編寫一個程序由用戶從鍵盤輸入整數(shù)，計算它們的和，并顯示結果。
?* 當用戶輸入了一個整數(shù)并按下回車鍵后，該數(shù)被程序讀入并累加到總和中。
?*/
import javax.swing.*;
public class InputSum2 {
?static String num1, num2;
?static int n1, n2,sum;
?public static void main(String args[]) {
??num1 = JOptionPane.showInputDialog("Please input a number");
??num2=JOptionPane.showInputDialog("please input second number");
??n1=Integer.parseInt(num1);
??n2=Integer.parseInt(num2);
??sum=n1+n2;
??JOptionPane.showMessageDialog(null, num1+"+"+num2+"="+sum);
?}
}