第八週 - 作業

鏈接：程式設計工藝大師
4*4 Button，點擊button會顯示對應的數字
程式代碼：
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class Test
{


public static void main(String[] args)
{
JFrame jtfMainFrame = new JFrame("Which Button Demo");
jtfMainFrame.setSize(600, 200);
JPanel jplPanel = new JPanel();
int i;
int j=1;
int num1 , num2;
JButton jbnButton[] = new JButton[16];
JButton changeButton[] = new JButton[3];
jplPanel.setLayout (new GridLayout(4, 4));
for(i = 0;i<=15;i++){
jbnButton[i]=new JButton("Button"+(i+1));
jplPanel.add(jbnButton[i]);
String s = Integer.toString(i+1);
jbnButton[i].addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
/*if(j<3){
changeButton[j] = jbnButton[i];
num1 = i;
j++;
}
else if(j==3){
changeButton[j]=jbnButton[i];
jbnButton[num1] = changeButton[j];
jbnButton[i] = changeButton[j-1];
j=1;
}*/
//j++;
//JButton btn = (JButton[i])e.getSourec();
//lab.setText(btn.getLabel+".");
System.out.println("Button"+s);
}
});
}

jtfMainFrame.getContentPane().add(jplPanel, BorderLayout.CENTER);
jtfMainFrame.setVisible(true);
}
}

第七週 - 作業

鏈接：程式設計工藝大師

程式代碼：
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class calculator extends JFrame implements ActionListener{

public static void main(String[]args){
new calculator();
}

public calculator()
{
JFrame window=new JFrame("Calculator");

window.setDefaultLookAndFeelDecorated(true);


window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

window.setLayout(new GridLayout(3,3));

JPanel jplPanel = new JPanel();
jplPanel.setLayout(new GridLayout(3,3));

JButton button[]=new JButton[10];
for(int i=1;i<=9;i++)
{
button[i] = new JButton();
//button[i].setActionCommand(i);
button[i].addActionListener(this);
button[i].setSize(50,50);
button[i].setText(Integer.toString(i));

jplPanel.add(button[i]);
}
     button[1].setActionCommand("1");
     button[2].setActionCommand("2");
     button[3].setActionCommand("3");
     button[4].setActionCommand("4");
     button[5].setActionCommand("5");
     button[6].setActionCommand("6");
     button[7].setActionCommand("7");
     button[8].setActionCommand("8");
     button[9].setActionCommand("9");

window.getContentPane().add(jplPanel, BorderLayout.CENTER);
window.setSize(500,500);
window.setVisible(true);
}

public void actionPerformed(ActionEvent e){
     String cmd = e.getActionCommand();
     if (cmd == "1"){
        System.out.println(1);
                     }
     if (cmd == "2"){
        System.out.println(2);
                     }
     if (cmd == "3"){
        System.out.println(3);
                     }
    if (cmd == "4"){
        System.out.println(4);
                     }
    if (cmd == "5"){
        System.out.println(5);
                     }
    if (cmd == "6"){
        System.out.println(6);
                     }
    if (cmd == "7"){
        System.out.println(7);
                     }
    if (cmd == "8"){
        System.out.println(8);
                     }
    if (cmd == "9"){
        System.out.println(9);
                     }
                                          }
}

期中程式

鏈接：程式設計工藝大師
程式內容：工程計算器
程式代碼：

import java.lang.*;
import java.util.Scanner;

public class calculator {
    public static void main(String args[]) {

        // Java.util.Scanner
        Scanner keyin = new Scanner(System.in);
        double value, ans=0;
        int select;
        disp_men ();

        //keyin  nextInt()
        select = keyin.nextInt();
        while ( select != 7) {
                 System.out.println("輸入一個數值 （注意三角函數範圍） ＝>");

                value = keyin.nextDouble();
                switch(select){
                case 1:
                        ans = Math.log(value);
                        System.out.printf("log(%,2f) = %.2f\n", value, ans);
                        break;
                case 2:
                        ans = Math.log10(value);
                        System.out.printf("log10(%,2f) = %.2f\n", value, ans);
                        break;
                case 3:
                        ans = Math.sqrt(value);
                        System.out.printf("sqrt(%,2f) = %.2f\n", value, ans);
                        break;
                case 4:
                        ans = Math.sin(value);
                        System.out.printf("sin(%,2f) = %.2f\n", value, ans);
                        break;
                case 5:
                        ans = Math.cos(value);
                        System.out.printf("cos(%,2f) = %.2f\n", value, ans);
                        break;
                case 6:
                        ans = Math.tan(value);
                        System.out.printf("tan(%,2f) = %.2f\n", value, ans);
                        break;
                default:
                        System.out.printf("sin(%,2f) = %.2f\n", value, ans);
                }
                disp_men();
               select = keyin.nextInt();
        }
        System.out.print("== 謝謝使用 ==\n");
}
static void disp_men() {
        System.out.printf("\n*** 工程計算器提供有下列功能 ***\n");
        System.out.printf("(1) log  函數\t (2) log10() 函數\n");
        System.out.printf("(3) sqrt 函數\t (2) sin() 函數\n");
        System.out.printf("(5) cos  函數\t (2) tan() 函數\n");
        System.out.printf("(7) 離開系統");
        System.out.printf("請選擇輸入 ＝>");

    }
}

第六週 - 作業

來源：程式設計工藝大師
程式代碼：
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class Test
{


public static void main(String[] args)
{
JFrame jtfMainFrame = new JFrame("Which Button Demo");
jtfMainFrame.setSize(450, 150);
JButton  jbnButton1 = new JButton("Button 1");
JButton  jbnButton2 = new JButton("Button 2");
JButton  jbnButton3 = new JButton("Button 3");
JButton  jbnButton4 = new JButton("Button 4");
JButton  jbnButton5 = new JButton("Button 5");
JButton  jbnButton6 = new JButton("Button 6");
JButton  jbnButton7 = new JButton("Button 7");
JButton  jbnButton8 = new JButton("Button 8");
JButton  jbnButton9 = new JButton("Button 9");
JButton  jbnButton10 = new JButton("Button 10");

jbnButton1.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
System.out.println("Button 1!");
}
});
jbnButton2.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
System.out.println("Button 2!");
}
});
jbnButton3.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
System.out.println("Button 3!");
}
});
jbnButton4.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
System.out.println("Button 4!");
}
});
jbnButton5.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
System.out.println("Button 5!");
}
});
jbnButton6.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
System.out.println("Button 6!");
}
});
jbnButton7.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
System.out.println("Button 7!");
}
});
jbnButton8.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
System.out.println("Button 8!");
}
});
jbnButton9.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
System.out.println("Button 9!");
}
});
jbnButton10.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
System.out.println("Button 10!");
}
});



JPanel jplPanel = new JPanel();
jplPanel.add(jbnButton1);
jplPanel.add(jbnButton2);
jplPanel.add(jbnButton3);
jplPanel.add(jbnButton4);
jplPanel.add(jbnButton5);
jplPanel.add(jbnButton6);
jplPanel.add(jbnButton7);
jplPanel.add(jbnButton8);
jplPanel.add(jbnButton9);
jplPanel.add(jbnButton10);
jtfMainFrame.getContentPane().add(jplPanel, BorderLayout.CENTER);
jtfMainFrame.setVisible(true);
System.out.println("chih-yu hsu");
}
}

以迴圈形式建立Button
程式代碼：
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Test extends JFrame{
public static void main(String[]args){
JFrame window=new JFrame("Calculator");
JPanel jplPanel = new JPanel();
JButton button[]=new JButton[10];
for(int i=0;i<button.length;i++){
button[i] = new JButton();
button[i].setSize(50,50);
button[i].setText(Integer.toString(i+1));
jplPanel.add(button[i]);

}
window.getContentPane().add(jplPanel, BorderLayout.CENTER);
window.setSize(500,500);
window.setVisible(true);
}}