2015年6月12日 星期五
[第十週]產生4*4亂數
import java.util.Random;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class test extends JFrame{
public static void main(String[]args){
Random random = new Random();
int number = 0;;
int array[] = new int[16];
boolean b;
for(int i=0;i<16;i++)
{
b = true;
while(b) {
b = false;
number = random.nextInt(16)+1;
for(int j=0;j<array.length;j++) {
if(array[j]==number) {
b = true;
}
}
}
array[i] = number;
System.out.printf("array[%d]=%d\n",i,number);
}
JFrame window=new JFrame("myButton");
window.setSize(450, 150);
JButton button[]=new JButton[16];
JPanel jplPanel = new JPanel();
jplPanel.setLayout(new GridLayout(4,4,8,8));
for (int i = 0; i < 16; i++){
//button[i]=new JButton(""+array[16]);
button[i] = new JButton();
button[i].setSize(40,40);
button[i].setText(Integer.toString(array[i]));
button[i].addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
for (int j = 0; j < 16; j++) {
if (e.getSource() == button[j]) {
System.out.println(j+1);
}
}
}
}
);
jplPanel.add(button[i]);
}
window.getContentPane().add(jplPanel, BorderLayout.CENTER);
window.setSize(400,400);
window.setVisible(true);
}
}
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class test extends JFrame{
public static void main(String[]args){
Random random = new Random();
int number = 0;;
int array[] = new int[16];
boolean b;
for(int i=0;i<16;i++)
{
b = true;
while(b) {
b = false;
number = random.nextInt(16)+1;
for(int j=0;j<array.length;j++) {
if(array[j]==number) {
b = true;
}
}
}
array[i] = number;
System.out.printf("array[%d]=%d\n",i,number);
}
JFrame window=new JFrame("myButton");
window.setSize(450, 150);
JButton button[]=new JButton[16];
JPanel jplPanel = new JPanel();
jplPanel.setLayout(new GridLayout(4,4,8,8));
for (int i = 0; i < 16; i++){
//button[i]=new JButton(""+array[16]);
button[i] = new JButton();
button[i].setSize(40,40);
button[i].setText(Integer.toString(array[i]));
button[i].addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
for (int j = 0; j < 16; j++) {
if (e.getSource() == button[j]) {
System.out.println(j+1);
}
}
}
}
);
jplPanel.add(button[i]);
}
window.getContentPane().add(jplPanel, BorderLayout.CENTER);
window.setSize(400,400);
window.setVisible(true);
}
}
[第十二週]製作推盤──使兩按鈕互換
import java.awt.*;
import java.awt.event.*;
import java.util.Random;
import javax.swing.*;
public class Calculator extends JFrame implements
ActionListener{
int space;
JButton button[]=new JButton[10];
public static void main(String[]args){
new Calculator();
}
public Calculator()
{
String s;
int myrand;
int[] a = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
int[] aresult;
int temp;
Random ran = new Random();
/*
for (int i = 0; i < 9; i++)
{
System.out.println(a[i]);
}
*/
for (int i = 0; i < 9; i++)
{
myrand=ran.nextInt(9-i);
temp=a[8-i];
a[8-i]=a[myrand];
a[myrand]=temp;
}
for (int i = 0; i < 9; i++)
{
System.out.println(a[i]);
}
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));
//s=Integer.toString(1);
s=String.valueOf(1);
//System.out.println(s);
//s="1";
for (int i = 0; i < 9; i++)
{
button[i] = new JButton();
button[i].setActionCommand(s);
button[i].addActionListener(this);
button[i].setSize(50,50);
button[i].setText(Integer.toString(a[i]));
jplPanel.add(button[i]);
if ( Integer.valueOf(button[i].getText())== 0)
{
space=i;
System.out.println(i) ;
}
}
window.getContentPane().add(jplPanel, BorderLayout.CENTER);
window.setSize(500,500);
window.setVisible(true);
}
public void actionPerformed(ActionEvent e) {
for(int i=0; i <=8; i++)
{
if(e.getSource() == button[i]){
//if( Integer.valueOf(button[i].getText())== 0)
String tempsting;
if (i==space-1)
{
tempsting=button[i].getText();
button[i].setText(button[i+1].getText());
button[i+1].setText(tempsting);
System.out.println(i+button[i].getText());
}
}
}
}
}
[第十一週]製作推盤──產生3*3亂數不重複按鈕
import java.awt.*;
import java.awt.event.*;
import java.util.Random;
import javax.swing.*;
public class Calculator extends JFrame implements
ActionListener{
JButton button[]=new JButton[10];
public static void main(String[]args){
new Calculator();
}
public Calculator()
{
String s;
int myrand;
int[] a = { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
int[] aresult;
int temp;
Random ran = new Random();
for (int i = 0; i < 9; i++)
{
System.out.println(a[i]);
}
for (int i = 0; i < 9; i++)
{
myrand=ran.nextInt(9-i);
temp=a[8-i];
a[8-i]=a[myrand];
a[myrand]=temp;
}
for (int i = 0; i < 9; i++)
{
System.out.println(a[i]);
}
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));
//s=Integer.toString(1);
s=String.valueOf(1);
//System.out.println(s);
//s="1";
for (int i = 0; i < 9; i++)
{
button[i] = new JButton();
button[i].setActionCommand(s);
button[i].addActionListener(this);
button[i].setSize(50,50);
button[i].setText(Integer.toString(a[i]));
jplPanel.add(button[i]);
}
window.getContentPane().add(jplPanel, BorderLayout.CENTER);
window.setSize(500,500);
window.setVisible(true);
}
public void actionPerformed(ActionEvent e) {
for(int i=1; i <= 9; i++)
{
if(e.getSource() == button[i]){
System.out.println(i);
}
}
}
}
import java.awt.event.*;
import java.util.Random;
import javax.swing.*;
public class Calculator extends JFrame implements
ActionListener{
JButton button[]=new JButton[10];
public static void main(String[]args){
new Calculator();
}
public Calculator()
{
String s;
int myrand;
int[] a = { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
int[] aresult;
int temp;
Random ran = new Random();
for (int i = 0; i < 9; i++)
{
System.out.println(a[i]);
}
for (int i = 0; i < 9; i++)
{
myrand=ran.nextInt(9-i);
temp=a[8-i];
a[8-i]=a[myrand];
a[myrand]=temp;
}
for (int i = 0; i < 9; i++)
{
System.out.println(a[i]);
}
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));
//s=Integer.toString(1);
s=String.valueOf(1);
//System.out.println(s);
//s="1";
for (int i = 0; i < 9; i++)
{
button[i] = new JButton();
button[i].setActionCommand(s);
button[i].addActionListener(this);
button[i].setSize(50,50);
button[i].setText(Integer.toString(a[i]));
jplPanel.add(button[i]);
}
window.getContentPane().add(jplPanel, BorderLayout.CENTER);
window.setSize(500,500);
window.setVisible(true);
}
public void actionPerformed(ActionEvent e) {
for(int i=1; i <= 9; i++)
{
if(e.getSource() == button[i]){
System.out.println(i);
}
}
}
}
2015年4月23日 星期四
[第七週]製作智慧推盤前篇──如何製作Java GridLayout&按扭回應(待補充說明)
什麼是「智慧推盤(n-puzzle)」?
▲小時候常玩的華容道就是智慧推盤的延伸
=======================================================================
在學會做智慧推盤前,先學會如何用Java做GridLayout的按鈕排列
=======================================================================
import java.awt.GridLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
public class GridLayoutTest {
public static void main(String[] args) {
JFrame.setDefaultLookAndFeelDecorated(true);
JFrame frame = new JFrame("GridLayout Test");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new GridLayout(3, 2));
frame.add(new JButton("Button 1"));
frame.add(new JButton("Button 2"));
frame.add(new JButton("Button 3"));
frame.add(new JButton("Button 4"));
frame.add(new JButton("Button 5"));
frame.add(new JButton("Button 6"));
frame.add(new JButton("Button 7"));
frame.add(new JButton("Button 8"));
frame.pack();
frame.setVisible(true);
}
}
執行結果圖:
=======================================================================
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("d1");
button[i].addActionListener(this);
button[i].setSize(50,50);
button[i].setText(Integer.toString(i));
jplPanel.add(button[i]);
}
window.getContentPane().add(jplPanel, BorderLayout.CENTER);
window.setSize(500,500);
window.setVisible(true);
}
public void actionPerformed(ActionEvent e) {
String cmd = e.getActionCommand();
if (cmd == "d1") {
System.out.println("Yes....");
}
}
}
執行結果圖:
▲小時候常玩的華容道就是智慧推盤的延伸
=======================================================================
在學會做智慧推盤前,先學會如何用Java做GridLayout的按鈕排列
Java GridLayout:
=======================================================================
import java.awt.GridLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
public class GridLayoutTest {
public static void main(String[] args) {
JFrame.setDefaultLookAndFeelDecorated(true);
JFrame frame = new JFrame("GridLayout Test");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new GridLayout(3, 2));
frame.add(new JButton("Button 1"));
frame.add(new JButton("Button 2"));
frame.add(new JButton("Button 3"));
frame.add(new JButton("Button 4"));
frame.add(new JButton("Button 5"));
frame.add(new JButton("Button 6"));
frame.add(new JButton("Button 7"));
frame.add(new JButton("Button 8"));
frame.pack();
frame.setVisible(true);
}
}
執行結果圖:
=======================================================================
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("d1");
button[i].addActionListener(this);
button[i].setSize(50,50);
button[i].setText(Integer.toString(i));
jplPanel.add(button[i]);
}
window.getContentPane().add(jplPanel, BorderLayout.CENTER);
window.setSize(500,500);
window.setVisible(true);
}
public void actionPerformed(ActionEvent e) {
String cmd = e.getActionCommand();
if (cmd == "d1") {
System.out.println("Yes....");
}
}
}
執行結果圖:
[第六週]增加按鈕&讓按鈕皆能個別執行之土法煉鋼法
以上禮拜的程式碼(檔名為Test.java)為例:
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");
JPanel jplPanel = new JPanel();
jplPanel.add(jbnButton1);
jtfMainFrame.getContentPane().add(jplPanel, BorderLayout.CENTER);
jtfMainFrame.setVisible(true);
System.out.print("yu-min liaw");
}
}
執行結果如下:
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");
JPanel jplPanel = new JPanel();
jplPanel.add(jbnButton1);
jtfMainFrame.getContentPane().add(jplPanel, BorderLayout.CENTER);
jtfMainFrame.setVisible(true);
System.out.print("yu-min liaw");
}
}
執行結果如下:
========================================================================
現在,我們要讓程式增加按鈕(檔名為Test1.java):
從上禮拜知道:
JButton jbnButton1 = new JButton("Button 1");
是新增按鈕的指令
而
jplPanel.add(jbnButton1);
則是增加按鈕物件的程式碼
所以我們讓程式碼新增一個Buttion2如下:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class Test1
{
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");
JPanel jplPanel = new JPanel();
jplPanel.add(jbnButton1);
jplPanel.add(jbnButton2);
jtfMainFrame.getContentPane().add(jplPanel, BorderLayout.CENTER);
jtfMainFrame.setVisible(true);
System.out.print("yu-min liaw");
}
}
執行結果就會如下:
以此類推,我們讓按鈕增加至1~9,物件也增加1~9
JButton jbnButton1 = new JButton("Button 數字1~9");
jplPanel.add(jbnButton數字1~9);
jplPanel.add(jbnButton數字1~9);
即如下程式碼:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class Test1
{
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");
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);
jtfMainFrame.getContentPane().add(jplPanel, BorderLayout.CENTER);
jtfMainFrame.setVisible(true);
System.out.print("yu-min liaw");
}
}
執行結果圖:
接下來,我們要讓個別按鈕點下去之後 會有個別回應(檔名為Test2.java):
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class Test2
{
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");
jbnButton1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
System.out.println("Button 1!");
}
});
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);
jtfMainFrame.getContentPane().add(jplPanel, BorderLayout.CENTER);
jtfMainFrame.setVisible(true);
System.out.print("yu-min liaw");
執行後,會如下圖:
由上面可知新增程式碼ActionListener可命令哪個按扭做回應
並用system.out使按鈕回應反映出來
以此類推,我們將上列新增的程式碼做延伸
jbnButton數字1~9.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
System.out.println("Button 數字1~9!");
}
});
即如下程式碼:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class Test2
{
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");
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!");
}
});
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);
jtfMainFrame.getContentPane().add(jplPanel, BorderLayout.CENTER);
jtfMainFrame.setVisible(true);
System.out.print("yu-min liaw");
}
}
執行結果圖:
[第四週]製作按鈕
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");
JPanel jplPanel = new JPanel();
jplPanel.add(jbnButton1);
jtfMainFrame.getContentPane().add(jplPanel, BorderLayout.CENTER);
jtfMainFrame.setVisible(true);
System.out.print("yu-min liaw");
}
}
執行圖如下:
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");
JPanel jplPanel = new JPanel();
jplPanel.add(jbnButton1);
jtfMainFrame.getContentPane().add(jplPanel, BorderLayout.CENTER);
jtfMainFrame.setVisible(true);
System.out.print("yu-min liaw");
}
}
執行圖如下:
[第三週]九九乘法表(待補充)
JavaScript
<html>
<head>
<title> The First Example: Hello, World </title>
</head>
<body>
<h2> This line is HTML </h2>
<script language="JavaScript">
for(i=1;i<=10;i+1)
{
document.write("<BR>");
}
</script>
<noscript>
Sorry, but your browser doesn't run JavaScript.
</noscript>
<h2> This line is HTML </h2>
<html>
<head>
<title> The First Example: Hello, World </title>
</head>
<body>
<h2> This line is HTML </h2>
<script language="JavaScript">
for(i=1;i<=10;i+1)
{
document.write("<BR>");
}
</script>
<noscript>
Sorry, but your browser doesn't run JavaScript.
</noscript>
<h2> This line is HTML </h2>
讓電腦可以使用javac編譯
安裝完Java SE之後
[我的電腦]右鍵
→[內容]
→[進階系統設定]
→[環境變數]
→找到變數Path點[編輯]
→於變數值後面加上;並貼上javac.exe的安裝位置(通常是
根目錄:\Program Files\Java\jdk1.8.0_40\bin)後按[確定]
→剩下步驟皆點[確定],打開[命令提示字元]輸入javac如能執行即完成
[我的電腦]右鍵
→[內容]
→[進階系統設定]
→[環境變數]
→找到變數Path點[編輯]
→於變數值後面加上;並貼上javac.exe的安裝位置(通常是
根目錄:\Program Files\Java\jdk1.8.0_40\bin)後按[確定]
→剩下步驟皆點[確定],打開[命令提示字元]輸入javac如能執行即完成
2015年3月13日 星期五
[第二週]Hello, World.與自己電腦的IP(JavaScript和Java SE的差別與應用)
(一)Hello, World
例1(JavaScript)
程式碼來源:JavaScript-基本結構 (Structure)
*注意:使用IE瀏覽器可能因無法支援檔案顯示"Sorry, but your browser doesn't run JavaScript."
2.儲存檔名命為"HelloWorldApp.java"
3.使用命令提示字元作Java編譯如下圖即成功
例2(Java SE)
2.儲存檔名命為"TestInet1.java"
3.使用命令提示字元作Java編譯如下圖即成功
4.額外小常識:使用"ipconfig"指令也能知道自己的電腦IP位址(如下圖)
例1(JavaScript)
程式碼來源:JavaScript-基本結構 (Structure)
1.複製以下程式碼 貼在一個新WordPad檔 並將紅字處"World"更為自己名字
<html>
<head>
<title> The First Example: Hello, World </title>
</head>
<body>
<h2> This line is HTML </h2>
<script language="JavaScript">
<!--
document.write("Hello, World.This sentence is written using JavaScript.");
// Text on the right of 2 slashes is comment
/* This is comment
that occur more than 1 line
*/
//-->
</script>
<noscript>
Sorry, but your browser doesn't run JavaScript.
</noscript>
<h2> This line is HTML </h2>
</body>
</html>
<head>
<title> The First Example: Hello, World </title>
</head>
<body>
<h2> This line is HTML </h2>
<script language="JavaScript">
<!--
document.write("Hello, World.This sentence is written using JavaScript.");
// Text on the right of 2 slashes is comment
/* This is comment
that occur more than 1 line
*/
//-->
</script>
<noscript>
Sorry, but your browser doesn't run JavaScript.
</noscript>
<h2> This line is HTML </h2>
</body>
</html>
2.儲存檔命名為"index.htm"
3.執行如以下圖即成功
*注意:使用IE瀏覽器可能因無法支援檔案顯示"Sorry, but your browser doesn't run JavaScript."
請使用其他瀏覽器瀏覽
例2(Java SE)
1.複製以下程式碼 貼在一個新WordPad檔
/** * The HelloWorldApp class implements an application that * simply prints "Hello World!" to standard output. */ class HelloWorldApp { public static void main(String[] args) { System.out.println("Hello World!"); // Display the string. } }
3.使用命令提示字元作Java編譯如下圖即成功
(二)電腦IP位址(以教室作業用電腦為範例IP)
例1(JavaScript)
1.複製以下程式碼 貼在一個新WordPad檔
<script language="JavaScript"> VIH_BackColor = "palegreen"; VIH_ForeColor = "navy"; VIH_FontPix = "16"; VIH_DisplayFormat = "You are visiting from:<br>IP Address: %%IP%%<br>Host: %%HOST%%"; VIH_DisplayOnPage = "yes"; </script> <script language="JavaScript" src="http://scripts.hashemian.com/js/visitorIPHOST.js.php"></script>
2.儲存檔命名為"IPAdress.htm"
3.執行如以下圖即成功
例2(Java SE)
1.複製以下程式碼 貼在一個新WordPad檔
import java.net.*; public class TestInet1 { public static void main(String argv[]) { try { InetAddress myip = InetAddress.getLocalHost(); System.out.println(myip.getHostName()); System.out.println(myip.getHostAddress()); } catch (UnknownHostException e) { System.out.println("Error: unable to resolve localhost"); } } }
3.使用命令提示字元作Java編譯如下圖即成功
4.額外小常識:使用"ipconfig"指令也能知道自己的電腦IP位址(如下圖)
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