5/22 按0可對調

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());
}
}


}

}

}

2015/5/8 隨機亂數陣列

import java.io.*;
import javax.swing.*;
import java.awt.*;
import java.util.Arrays;

public class button
{
  public static void main(String[] args) throws IOException
  {
    JFrame frame = new JFrame("作業GridLayout)");
    GridLayout f1=new GridLayout(4, 13);

    Container c=frame.getContentPane();

    c.setLayout(f1);
 
    int [] num = new int[16]; //宣告一個數字陣列，用來記錄產生過的亂數
    Arrays.fill(num,-1); //將陣列內容全都設為-1
    int i=1;
    do{
      int j=(int)(Math.random()*16);
      if(num[j] == 0) continue; //判斷是否亂數取出的數字是否出現過
      num[j] = 0;//將出現過的數字索引值的陣列內容設為0，代表出現過
      c.add(new JButton("第"+j+"個"));
      i++;
    }while(i<=16);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(300,300);
    frame.setVisible(true);
  }
}

=============================================================

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()

{

String s;

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];

//s=Integer.toString(1);

s=String.valueOf(1);

//System.out.println(s);

//s="1";

for (int i = 1; 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(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();

        System.out.println(cmd);

        if (cmd == "1") {

          

            System.out.println("Yes....");

        }

    }

}

4/10 JAVA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");
JButton  jbnButton2 = new JButton("Button 2");/*9個按鈕*/
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() { /*控制按扭動作*/

public void actionPerformed(ActionEvent e) {
System.out.print("button1"); /*按了會在CMD顯示*/
}
});
jbnButton2.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
System.out.print("button2");
}
});
jbnButton3.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
System.out.print("button3");
}
});
jbnButton4.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
System.out.print("button4");
}
});
jbnButton5.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
System.out.print("button5");
}
});
jbnButton6.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
System.out.print("button6");
}
});
jbnButton7.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
System.out.print("button7");
}
});
jbnButton8.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
System.out.print("button8");
}
});
jbnButton9.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
System.out.print("button9");
}
});


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("press ctrl+c to reset!");
}
}

3/20 作迴圈 VB+JAVA

JAVA 手動控制列出1到10

class Test
{
public static void main(String[] args)
{
System.out.println("1");
System.out.println("2");
System.out.println("3");
System.out.println("4");
System.out.println("5");
System.out.println("6");
System.out.println("7");
System.out.println("8");
System.out.println("9");
System.out.println("10");
}
}

************

JAVA迴圈(10到1)

class Test
{
public static void main(String[] args)
{
for (int i = 10; i > 0; i--) {
    System.out.println(i);
}
}
}

************

VB迴圈

Private Sub CommandButton1_Click()
For i = 1 To 9
Cells(1, i) = i
Next i
End Sub

2015/3/6 JAVA程式作業 更改環境變數+CMD執行JAVA

程式設計工藝大師
http://tccnchsu.blogspot.tw/2011/02/2011-java.html
1.為何why要選修這門課?(動機)
興趣
2.希忘從這門課獲得那些知識?(目標)
學好JAVA
3.我要如何修習這一門課?(態度與方法)
認真上課

更改環境變數
可讓CMD不需變更路徑就執行JAVAC

利用CMD執行JAVA

cd為移動資料夾

javac 為編譯JAVA

java 為執行

class Test

{

public static void main(String[] args)

{

System.out.println("_____*_____");

System.out.println("____***____");

System.out.println("___*****___");

System.out.println("__*******__");

System.out.println("_____*_____");

System.out.println("_____*_____");

}

}