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java基礎(chǔ)課程設(shè)計(jì)代碼 java程序設(shè)計(jì)課程設(shè)計(jì)

Java課程設(shè)計(jì)！急?。。。ǜ叻郑?/h2>

我?guī)湍憔帉懥艘徊糠郑瑢?shí)現(xiàn)了“輸入十個(gè)同學(xué)的相關(guān)信息，并在文本框中顯示”（圖形界面實(shí)現(xiàn)）。

專注于為中小企業(yè)提供網(wǎng)站設(shè)計(jì)制作、網(wǎng)站設(shè)計(jì)服務(wù),電腦端+手機(jī)端+微信端的三站合一,更高效的管理,為中小企業(yè)新華免費(fèi)做網(wǎng)站提供優(yōu)質(zhì)的服務(wù)。我們立足成都，凝聚了一批互聯(lián)網(wǎng)行業(yè)人才，有力地推動了千余家企業(yè)的穩(wěn)健成長，幫助中小企業(yè)通過網(wǎng)站建設(shè)實(shí)現(xiàn)規(guī)模擴(kuò)充和轉(zhuǎn)變。

要實(shí)現(xiàn)接下去的功能其實(shí)也真的不難的，但是真的很麻煩、很浪費(fèi)時(shí)間……我就幫你做到這里了，你自己添加一下代碼就可以（或者提高懸賞的話可以考慮考慮??！哈哈……）代碼如下：

import?java.awt.BorderLayout;

import?javax.swing.JPanel;

import?javax.swing.JFrame;

import?java.awt.Dimension;

import?javax.swing.JButton;

import?java.awt.Rectangle;

import?javax.swing.JLabel;

import?javax.swing.SwingConstants;

import?javax.swing.JScrollPane;

import?javax.swing.JTextArea;

import?javax.swing.JOptionPane;

public?class?TongJi?extends?JFrame?{

private?static?final?long?serialVersionUID?=?1L;

private?JPanel?jContentPane?=?null;

private?JButton?jButton?=?null;

private?JLabel?jLabel?=?null;

private?JScrollPane?jScrollPane?=?null;

private?JTextArea?jTextArea?=?null;

/**

*?This?is?the?default?constructor

*/

public?TongJi()?{

super();

initialize();

}

/**

*?This?method?initializes?this

*

*?@return?void

*/

private?void?initialize()?{

this.setSize(412,?372);

this.setContentPane(getJContentPane());

this.setTitle("成績統(tǒng)計(jì)");

this.addWindowListener(new?java.awt.event.WindowAdapter()?{

public?void?windowClosing(java.awt.event.WindowEvent?e)?{

System.exit(0);

}

});

this.setVisible(true);

}

/**

*?This?method?initializes?jContentPane

*

*?@return?javax.swing.JPanel

*/

private?JPanel?getJContentPane()?{

if?(jContentPane?==?null)?{

jLabel?=?new?JLabel();

jLabel.setBounds(new?Rectangle(18,?66,?65,?18));

jLabel.setHorizontalAlignment(SwingConstants.CENTER);

jLabel.setText("統(tǒng)計(jì)結(jié)果：");

jContentPane?=?new?JPanel();

jContentPane.setLayout(null);

jContentPane.add(getJButton(),?null);

jContentPane.add(jLabel,?null);

jContentPane.add(getJScrollPane(),?null);

}

return?jContentPane;

}

/**

*?This?method?initializes?jButton

*

*?@return?javax.swing.JButton

*/

private?JButton?getJButton()?{

if?(jButton?==?null)?{

jButton?=?new?JButton();

jButton.setBounds(new?Rectangle(18,?16,?86,?28));

jButton.setText("開始統(tǒng)計(jì)");

jButton.addActionListener(new?java.awt.event.ActionListener()?{

public?void?actionPerformed(java.awt.event.ActionEvent?e)?{

/////錄入成績信息

String[][]?mymsg=new?String[10][6];

for(int?i=0;i10;i++){

String?strnum=JOptionPane.showInputDialog(null,?"請輸入第"+(i+1)+"個(gè)學(xué)生的學(xué)號",?"信息錄入",?JOptionPane.WARNING_MESSAGE);

String?strname=JOptionPane.showInputDialog(null,?"請輸入第"+(i+1)+"個(gè)學(xué)生的姓名",?"信息錄入",?JOptionPane.WARNING_MESSAGE);

String?doublemath=JOptionPane.showInputDialog(null,?"請輸入第"+(i+1)+"個(gè)學(xué)生的數(shù)學(xué)成績",?"信息錄入",?JOptionPane.WARNING_MESSAGE);

String?doubleeng=JOptionPane.showInputDialog(null,?"請輸入第"+(i+1)+"個(gè)學(xué)生的英語成績",?"信息錄入",?JOptionPane.WARNING_MESSAGE);

String?doublejava=JOptionPane.showInputDialog(null,?"請輸入第"+(i+1)+"個(gè)學(xué)生的JAVA成績",?"信息錄入",?JOptionPane.WARNING_MESSAGE);

String?doublecomp=JOptionPane.showInputDialog(null,?"請輸入第"+(i+1)+"個(gè)學(xué)生的計(jì)算機(jī)成績",?"信息錄入",?JOptionPane.WARNING_MESSAGE);

mymsg[i][0]=strnum;

mymsg[i][1]=strname;

mymsg[i][2]=doublemath;

mymsg[i][3]=doubleeng;

mymsg[i][4]=doublejava;

mymsg[i][5]=doublecomp;

}

////顯示成績信息

jTextArea.setText("學(xué)號????姓名????數(shù)學(xué)????英語????JAVA????計(jì)算機(jī)");

for(int?i=0;i10;i++){

jTextArea.setText(jTextArea.getText()+"\r\n");

for(int?j=0;j6;j++){

jTextArea.setText(jTextArea.getText()+mymsg[i][j]+"????");

}

}

}

});

}

return?jButton;

}

/**

*?This?method?initializes?jScrollPane

*

*?@return?javax.swing.JScrollPane

*/

private?JScrollPane?getJScrollPane()?{

if?(jScrollPane?==?null)?{

jScrollPane?=?new?JScrollPane();

jScrollPane.setBounds(new?Rectangle(18,?86,?370,?230));

jScrollPane.setViewportView(getJTextArea());

}

return?jScrollPane;

}

/**

*?This?method?initializes?jTextArea

*

*?@return?javax.swing.JTextArea

*/

private?JTextArea?getJTextArea()?{

if?(jTextArea?==?null)?{

jTextArea?=?new?JTextArea();

jTextArea.setEditable(false);

}

return?jTextArea;

}

public?static?void?main(String?args[]){

new?TongJi();

}

}??//??@jve:decl-index=0:visual-constraint="10,10"

效果如下圖：

JAVA課程設(shè)計(jì)計(jì)算器的源代碼

比較完整的Java計(jì)算器

import javax.swing.*;

import javax.swing.event.*;

import java.awt.*;

import java.awt.event.*;

public class calculator extends JFrame implements ActionListener

{//這里我把JFrame寫成Frame，這個(gè)錯(cuò)誤找了好久

JFrame frame;

private JButton jia=new JButton("+");

private JButton jian=new JButton("-");

private JButton cheng=new JButton("*");

private JButton chu=new JButton("/");

private JButton qiuyi=new JButton("%");

private JButton deng=new JButton("=");

private JButton fu=new JButton("+/-");

private JButton dian=new JButton(".");

private JButton kai=new JButton("sqrt");

private JButton diao=new JButton("1/x");

private JButton aa=new JButton("A");

private JButton bb=new JButton("B");

private JButton cc=new JButton("C");

private JButton dd=new JButton("D");

private JButton ee=new JButton("E");

private JButton ff=new JButton("F");

private TextField k1=new TextField();

private objConversion convert = new objConversion();

JMenuItem copy,paste,s,t,help,about,me;

JRadioButton sixteen,ten,eight,two;

JButton backspace,ce,c,num0,num1,num2,num3,num4,num5,num6,num7,num8,num9;

Container cp;

JTextField text;

String copycontent="";

boolean clickable=true,clear=true;

int all=0;

double qian;

String fuhao;

int jin=10,first=1;

public calculator()

{

setTitle("計(jì)算器－楊彩制作");

setSize(400,300);

setLocation(250,200);

text=new JTextField(25);

// text.setEnabled(false);

text.setText("0.");

text.setHorizontalAlignment(JTextField.RIGHT);//從右到左

JPanel cp1=new JPanel();

JPanel cp2=new JPanel();

JPanel cp3=new JPanel();

cp=getContentPane();

cp.add(cp1,"North");

cp.add(cp2,"Center");

cp.add(cp3,"South");

cp1.setLayout(new GridLayout(1,6));

cp2.setLayout(new GridLayout(2,4));

cp3.setLayout(new GridLayout(6,6));

sixteen=new JRadioButton("十六進(jìn)制");

sixteen.setVisible(false);

ten=new JRadioButton("十進(jìn)制",true);

ten.setVisible(false);

eight=new JRadioButton("八進(jìn)制");

eight.setVisible(false);

two=new JRadioButton("二進(jìn)制");

two.setVisible(false);

sixteen.addActionListener(this);

ten.addActionListener(this);

eight.addActionListener(this);

two.addActionListener(this);

ButtonGroup btg=new ButtonGroup();

btg.add(sixteen);

btg.add(ten);

btg.add(eight);

btg.add(two);

JTextField t3=new JTextField(25);

cp1.add(text);

// text.setEnabled(false);

text.setEditable(false);

text.setBackground(new Color(255, 255, 255));

cp2.add(sixteen);

cp2.add(ten);

cp2.add(eight);

cp2.add(two);

backspace=new JButton("Backspace");

backspace.setForeground(new Color(255,0,0));

backspace.addActionListener(this);

ce=new JButton("CE");

ce.setForeground(new Color(255,0,0));

ce.addActionListener(this);

c=new JButton("C");

c.setForeground(new Color(255,0,0));

c.addActionListener(this);

k1.setVisible(false);

cp2.add(k1);

cp2.add(backspace);

cp2.add(ce);

cp2.add(c);

num0=new JButton("0");

num1=new JButton("1");

num2=new JButton("2");

num3=new JButton("3");

num4=new JButton("4");

num5=new JButton("5");

num6=new JButton("6");

num7=new JButton("7");

num8=new JButton("8");

num9=new JButton("9");

cp3.add(num7);

num7.addActionListener(this);

cp3.add(num8);

num8.addActionListener(this);

cp3.add(num9);

num9.addActionListener(this);

cp3.add(chu);

chu.setForeground(new Color(255,0,0));

chu.addActionListener(this);

cp3.add(kai);

kai.addActionListener(this);

cp3.add(num4);

num4.addActionListener(this);

cp3.add(num5);

num5.addActionListener(this);

cp3.add(num6);

num6.addActionListener(this);

cp3.add(cheng);

cheng.setForeground(new Color(255,0,0));

cheng.addActionListener(this);

cp3.add(qiuyi);

qiuyi.addActionListener(this);

cp3.add(num1);

num1.addActionListener(this);

cp3.add(num2);

num2.addActionListener(this);

cp3.add(num3);

num3.addActionListener(this);

cp3.add(jian);

jian.setForeground(new Color(255,0,0));

jian.addActionListener(this);

cp3.add(diao);

diao.addActionListener(this);

cp3.add(num0);

num0.addActionListener(this);

cp3.add(fu);

fu.addActionListener(this);

cp3.add(dian);

dian.addActionListener(this);

cp3.add(jia);

jia.setForeground(new Color(255,0,0));

jia.addActionListener(this);

cp3.add(deng);

deng.setForeground(new Color(255,0,0));

deng.addActionListener(this);

cp3.add(aa);

aa.addActionListener(this);

cp3.add(bb);

bb.addActionListener(this);

cp3.add(cc);

cc.addActionListener(this);

cp3.add(dd);

dd.addActionListener(this);

cp3.add(ee);

ee.addActionListener(this);

cp3.add(ff);

ff.addActionListener(this);

aa.setVisible(false);

bb.setVisible(false);

cc.setVisible(false);

dd.setVisible(false);

ee.setVisible(false);

ff.setVisible(false);

JMenuBar mainMenu = new JMenuBar();

setJMenuBar(mainMenu);

JMenu editMenu = new JMenu("編輯");

JMenu viewMenu = new JMenu("查看");

JMenu helpMenu = new JMenu("幫助");

mainMenu.add(editMenu);

mainMenu.add(viewMenu);

mainMenu.add(helpMenu);

copy = new JMenuItem(" 復(fù)制");

paste = new JMenuItem(" 粘貼");

KeyStroke copyks=KeyStroke.getKeyStroke(KeyEvent.VK_C,Event.CTRL_MASK);

copy.setAccelerator(copyks);//設(shè)置退出菜單選項(xiàng)加上快捷鍵

KeyStroke pasteks=KeyStroke.getKeyStroke(KeyEvent.VK_V,Event.CTRL_MASK);

paste.setAccelerator(pasteks);//設(shè)置退出菜單選項(xiàng)加上快捷鍵

editMenu.add(copy);

editMenu.add(paste);

copy.addActionListener(this);

paste.addActionListener(this);

t = new JMenuItem("●標(biāo)準(zhǔn)型");

s = new JMenuItem(" 科學(xué)型");

viewMenu.add(t);

viewMenu.add(s);

t.addActionListener(this);

s.addActionListener(this);

help = new JMenuItem(" 幫助主題");

about = new JMenuItem(" 關(guān)于計(jì)算器");

me = new JMenuItem(" 作者主頁");

helpMenu.add(help);

helpMenu.add(about);

helpMenu.add(me);

help.addActionListener(this);

about.addActionListener(this);

me.addActionListener(this);

addWindowListener(new WindowDestroyer());//結(jié)束窗口

}

public void actionPerformed(ActionEvent e)

{//響應(yīng)動作代碼

if(first==1)

text.setText("");

first=0;//第一次把文本框0.清空

Object temp = e.getSource();

if(temp==copy)

{

copycontent = text.getText();

}

if(temp==paste)

{

text.setText(text.getText()+copycontent);

}

if(temp==t)

{//標(biāo)準(zhǔn)

sixteen.setVisible(false);

ten.setVisible(false);

eight.setVisible(false);

two.setVisible(false);

t.setText("●標(biāo)準(zhǔn)型");

s.setText(" 科學(xué)型");

aa.setVisible(false);

bb.setVisible(false);

cc.setVisible(false);

dd.setVisible(false);

ee.setVisible(false);

ff.setVisible(false);

}

if(temp==s)

{//科學(xué)

sixteen.setVisible(true);

ten.setVisible(true);

eight.setVisible(true);

two.setVisible(true);

t.setText(" 標(biāo)準(zhǔn)型");

s.setText("●科學(xué)型");

aa.setVisible(true);

bb.setVisible(true);

cc.setVisible(true);

dd.setVisible(true);

ee.setVisible(true);

ff.setVisible(true);

aa.setEnabled(false);

bb.setEnabled(false);

cc.setEnabled(false);

dd.setEnabled(false);

ee.setEnabled(false);

ff.setEnabled(false);

}

if(temp==help)

{ //打開系統(tǒng)幫助文件 要查資料

try

{

String filePath = "C:/WINDOWS/Help/calc.chm";

Runtime.getRuntime().exec("cmd.exe /c "+filePath);

}

catch(Exception eeee)

{

System.out.println("打開系統(tǒng)的計(jì)算器出錯(cuò)");

}

}

if(temp==about)

{

JOptionPane.showMessageDialog(frame," Java計(jì)算器\n 楊彩 制作\n\n ","關(guān)于計(jì)算器",JOptionPane.INFORMATION_MESSAGE); ;

}

if(temp==me)

{

try

{

Process p = Runtime.getRuntime().exec("explorer ");

}

catch(Exception eeee)

{

System.out.println("打開指定網(wǎng)頁出錯(cuò)");

}

}

try

{

if(temp==sixteen)

{

String hex=text.getText();

int inthex=Integer.parseInt(hex,jin);//先把數(shù)變?yōu)?0進(jìn)制

text.setText(convert.decHex(inthex)) ;

jin=16;

aa.setEnabled(true);

bb.setEnabled(true);

cc.setEnabled(true);

dd.setEnabled(true);

ee.setEnabled(true);

ff.setEnabled(true);

num2.setEnabled(true);

num3.setEnabled(true);

num4.setEnabled(true);

num5.setEnabled(true);

num6.setEnabled(true);

num7.setEnabled(true);

num8.setEnabled(true);

num9.setEnabled(true);

}

if(temp==eight)

{

String oct =text.getText();

int intoct=Integer.parseInt(oct,jin);

text.setText(convert.decOct(intoct)) ;

jin=8;

aa.setEnabled(false);

bb.setEnabled(false);

cc.setEnabled(false);

dd.setEnabled(false);

ee.setEnabled(false);

ff.setEnabled(false);

num2.setEnabled(true);

num3.setEnabled(true);

num4.setEnabled(true);

num5.setEnabled(true);

num6.setEnabled(true);

num7.setEnabled(true);

num8.setEnabled(false);

num9.setEnabled(false);

}

if(temp==two)

{

String bin=text.getText();

int intbin=Integer.parseInt(bin,jin);

text.setText(convert.decBin(intbin));

jin=2;

aa.setEnabled(false);

bb.setEnabled(false);

cc.setEnabled(false);

dd.setEnabled(false);

ee.setEnabled(false);

ff.setEnabled(false);

num2.setEnabled(false);

num3.setEnabled(false);

num4.setEnabled(false);

num5.setEnabled(false);

num6.setEnabled(false);

num7.setEnabled(false);

num8.setEnabled(false);

num9.setEnabled(false);

}

if(temp==ten)

{

String dec=text.getText();

int intdec=Integer.parseInt(dec,jin);

// text.setText(convert.decDec(intdec)); //本句會把123變成321

text.setText(intdec+"");

jin=10;

aa.setEnabled(false);

bb.setEnabled(false);

cc.setEnabled(false);

dd.setEnabled(false);

ee.setEnabled(false);

ff.setEnabled(false);

num2.setEnabled(true);

num3.setEnabled(true);

num4.setEnabled(true);

num5.setEnabled(true);

num6.setEnabled(true);

num7.setEnabled(true);

num8.setEnabled(true);

num9.setEnabled(true);

}

}

catch(Exception ee)

{

System.out.println("轉(zhuǎn)換出錯(cuò),可能你沒有輸入任何字符");

text.setText("轉(zhuǎn)換出錯(cuò)");

clear=false;

}

if(temp==backspace)

{//退格

String s = text.getText();

text.setText("");

for (int i = 0; i s.length() - 1; i++)

{

char a = s.charAt(i);

text.setText(text.getText() + a);

}

}

if (temp==ce)

{

text.setText("0.");

clear=true;

first=1;

}

if (temp==c)

{

text.setText("0."); ;

clear=true;

first=1;

}

if(temp==num0)

{

if(clear==false)//判斷是否點(diǎn)擊了符號位

text.setText("");

text.setText(text.getText()+"0");

}

if(temp==num1)

{

if(clear==false)

text.setText("");

text.setText(text.getText()+"1");

clear=true;//第二次不在清空（前二句）

}

if(temp==num2)

{

if(clear==false)

text.setText("");

text.setText(text.getText()+"2");

clear=true;

}

if(temp==num3)

{

if(clear==false)

text.setText("");

text.setText(text.getText()+"3");

clear=true;

}

if(temp==num4)

{

if(clear==false)

text.setText("");

text.setText(text.getText()+"4");

clear=true;

}

if(temp==num5)

{

if(clear==false)

text.setText("");

text.setText(text.getText()+"5");

clear=true;

}

if(temp==num6)

{

if(clear==false)

text.setText("");

text.setText(text.getText()+"6");

clear=true;

}

if(temp==num7)

{

if(clear==false)

text.setText("");

text.setText(text.getText()+"7");

clear=true;

}

if(temp==num8)

{

if(clear==false)

text.setText("");

text.setText(text.getText()+"8");

clear=true;

}

if(temp==num9)

{

if(clear==false)

text.setText("");

text.setText(text.getText()+"9");

clear=true;

}

if(temp==aa)

{

text.setText(text.getText()+"A");

}

if(temp==bb)

{

text.setText(text.getText()+"B");

}

if(temp==cc)

{

text.setText(text.getText()+"C");

}

if(temp==dd)

{

text.setText(text.getText()+"D");

}

if(temp==ee)

{

text.setText(text.getText()+"E");

}

if(temp==ff)

{

text.setText(text.getText()+"F");

}

if(temp==dian)

{

clickable=true;

for (int i = 0; i text.getText().length(); i++)

if ('.' == text.getText().charAt(i))

{

clickable=false;

break;

} //第一層判斷是否里面含有小數(shù)點(diǎn);

if(clickable==true)//第二壇判斷

text.setText(text.getText()+".");

}

try

{

if(temp==jia)

{//加法

qian=Double.parseDouble(text.getText());

fuhao="+";

clear=false;

}

if(temp==jian)

{

qian=Double.parseDouble(text.getText());

fuhao="-";

clear=false;

;

}

if(temp==cheng)

{

qian=Double.parseDouble(text.getText());

fuhao="*";

clear=false;

}

if(temp==chu)

{

qian=Double.parseDouble(text.getText());

fuhao="/";

clear=false;

}

if(temp==deng)

{

double ss=Double.parseDouble(text.getText());

text.setText("");

if(fuhao=="+")

text.setText(qian+ss+"");

if(fuhao=="-")

text.setText(qian-ss+"");

if(fuhao=="*")

text.setText(qian*ss+"");

if(fuhao=="/")

text.setText(qian/ss+"");

clear=false;//要清空前一次的數(shù)據(jù)

;

}

if(temp==kai)

{

String s = text.getText();

if (s.charAt(0) == '-')

{

text.setText("負(fù)數(shù)不能開根號");

}

else

text.setText(Double.toString(java.lang.Math.sqrt(Double.parseDouble(text.getText()))));

clear=false;

}

if(temp==diao)

{

if (text.getText().charAt(0) == '0'text.getText().length() == 1)

{

text.setText("除數(shù)不能為零");

}

else

{

boolean isDec = true;

int i, j, k;

String s = Double.toString(1 / Double.parseDouble(text.getText()));

for (i = 0; i s.length(); i++)

if (s.charAt(i) == '.')

break;

for (j = i + 1; j s.length(); j++)

if (s.charAt(j) != '0')

{

isDec = false;

break;

}

if (isDec == true)

{

String stemp = "";

for (k = 0; k i; k++)

stemp += s.charAt(k);

text.setText(stemp);

}

else

text.setText(s);

}

clear=false;

}

if(temp==qiuyi)

{

text.setText("0");

clear=false;

}

if (temp == fu)

{ //導(dǎo)師，此方法參考書中例子

boolean isNumber = true;

String s = text.getText();

for (int i = 0; i s.length(); i++)

if (! (s.charAt(i) = '0' s.charAt(i) = '9' || s.charAt(i) == '.' ||

s.charAt(i) == '-'))

{

isNumber = false;

break;

}

if (isNumber == true)

{

//如果當(dāng)前字符串首字母有'-'號,代表現(xiàn)在是個(gè)負(fù)數(shù),再按下時(shí),則將首符號去掉

if (s.charAt(0) == '-')

{

text.setText("");

for (int i = 1; i s.length(); i++)

{

char a = s.charAt(i);

text.setText(text.getText() + a);

}

}

//如果當(dāng)前字符串第一個(gè)字符不是符號，則添加一個(gè)符號在首字母處

else

text.setText('-' + s);

}

}

}

catch(Exception eee)

{

System.out.println("運(yùn)算時(shí),首先輸入數(shù)字或字符");

text.setText("運(yùn)算出錯(cuò)");

clear=false;

}

}

class WindowDestroyer extends WindowAdapter

{//退出窗口動作

public void windowClosing(WindowEvent e)

{

System.exit(0);

}

}

class objConversion

{//導(dǎo)師,本進(jìn)制類參考了CSMD類轉(zhuǎn)換例子

public void objConversion ()

{

}

public String decDec (int decNum)

{//10

String strDecNum = Integer.toString(decNum);

for (int i = strDecNum.length(); i 3; i++)

{

strDecNum = "0" + strDecNum;

}

// return strDecNum;

return invert (strDecNum, 5);

}

public String decHex (int decNum)

{//10 to 16

String strHexNum = "";

int currentNum = 0;

while (decNum != 0)

{

if (decNum 15)

{

currentNum = decNum % 16;

decNum /= 16;

}

else

{

currentNum = decNum;

decNum = 0;

}

switch (currentNum)

{

case 15: strHexNum += "F";

break;

case 14: strHexNum += "E";

break;

case 13: strHexNum += "D";

break;

case 12: strHexNum += "C";

break;

case 11: strHexNum += "B";

break;

case 10: strHexNum += "A";

break;

default: strHexNum += Integer.toString(currentNum);

break;

}

}

return invert (strHexNum, 2);

}

public String decOct (int decNum)

{//10 to 8

String strOctNum = "";

while (decNum != 0)

{

if (decNum 7)

{

strOctNum += Integer.toString(decNum % 8);

decNum /= 8;

}

else

{

strOctNum += Integer.toString(decNum);

decNum = 0;

}

}

return invert (strOctNum, 3);

}

public String decBin (int decNum)

{//10 to 2

String strBinNum = "";

while (decNum != 0)

{

if (decNum 1)

{

strBinNum += Integer.toString(decNum % 2);

decNum /= 2;

}

else

{

strBinNum += Integer.toString(decNum);

decNum = 0;

}

}

return invert (strBinNum, 8);

}

private String invert (String strNum, int minLength) //轉(zhuǎn)換長度

{

String answer = "";

int length = strNum.length();

if (length minLength)

{

for (int padding = (minLength - length); padding 0; padding--)

{

answer += "0";

}

}

for (int i = length; i 0; i--)

{

answer += strNum.charAt (i - 1);

}

return answer;

}

}

public static void main(String arg[])//產(chǎn)生窗口

{

calculator win = new calculator();

win.setVisible(true);

}

}

java數(shù)組課程設(shè)計(jì)代碼

public static void main(String[] args) {

/**

*

* （1）實(shí)現(xiàn)整型數(shù)組的創(chuàng)建要求由用戶輸入數(shù)組長度以及數(shù)組元素

*/

Scanner input = new Scanner(System.in);

System.out.print("請輸入整型數(shù)組的長度：");

int lengthInt = input.nextInt();

int[] arrInt = new int[lengthInt];

for (int i = 0; i arrInt.length; i++) {

System.out.println("請輸入第" + (i + 1) + "個(gè)元素");

arrInt[i] = input.nextInt();

}

System.out.print("整型數(shù)組:");

for (int i = 0; i arrInt.length; i++) {

System.out.print(arrInt[i] + "\t");

}

System.out.println();

/**

*

* （2）查找數(shù)組中最大值最小值以及求平均值

*/

int max = 0;

int min = arrInt[0];

double sum = 0;

for (int i = 0; i arrInt.length; i++) {

if (arrInt[i] max) {

max = arrInt[i];

}

if (arrInt[i] min) {

min = arrInt[i];

}

sum += arrInt[i];

}

double avg = sum / arrInt.length;

System.out.println("最大值：" + max);

System.out.println("最小值：" + min);

System.out.println("平均值：" + avg);

/**

*

* （3）實(shí)現(xiàn)數(shù)組的排序，有用戶選擇何種方式

*/

System.out.println("請選擇排序的方式(輸入數(shù)字即可)：");

System.out.println("1：由小到大，2：由大到小");

int a = input.nextInt();

switch (a) {

case 1:

int i,

j,

t;

for (i = 0; i arrInt.length - 1; i++) {

for (j = 0; j arrInt.length - i - 1; j++) {

if (arrInt[j + 1] arrInt[j]) {

t = arrInt[j + 1];

arrInt[j + 1] = arrInt[j];

arrInt[j] = t;

}

}

}

break;

case 2:

int x,

y,

z;

for (x = 0; x arrInt.length - 1; x++) {

for (y = 0; y arrInt.length - x - 1; y++) {

if (arrInt[y + 1] arrInt[y]) {

z = arrInt[y + 1];

arrInt[y + 1] = arrInt[y];

arrInt[y] = z;

}

}

}

break;

default:

System.out.println("輸入有誤");

break;

}

for (int k = 0; k arrInt.length; k++) {

System.out.print(arrInt[k] + "\t");

}

System.out.println();

/**

*

* （4）實(shí)現(xiàn)數(shù)組的插入，并對插入后的數(shù)組重排序

*/

System.out.println("該數(shù)據(jù)長度為" + arrInt.length + ",插入數(shù)據(jù)后也記錄最后" + "個(gè)的元素");

boolean ref = true;

do {

System.out.println("請插入元素：");

for (int i = 0; i arrInt.length; i++) {

if (i arrInt.length - 1)

arrInt[i] = arrInt[i + 1];

else

arrInt[i] = input.nextInt();

}

System.out.println("是否再插入新的元素？(是：Y,否：其他任何字符)");

if (!input.next().equalsIgnoreCase("y")) {

ref = false;

}

} while (ref);

System.out.print("插入元素后的數(shù)組：");

for (int i = 0; i arrInt.length; i++) {

System.out.print(arrInt[i] + "\t");

}

System.out.println();

/**

*

* （5）實(shí)現(xiàn)對某個(gè)數(shù)組的刪除或者修改操作

*/

System.out.println("請選擇操作：1.刪除；2.修改");

int d = input.nextInt();

System.out.println("請輸入要操作的元素下標(biāo)：(輸入0-" + (arrInt.length - 1)

+ "之內(nèi)的數(shù)字即可):");

int index = input.nextInt();

System.out.println(index);

int[] arrs = new int[arrInt.length - 1];

switch (d) {

case 1:

for (int i = 0; i arrInt.length - 1; i++) {

if (i == index index arrInt.length - 1) {

arrs[i] = arrInt[index + 1];

} else if (i index index arrInt.length - 1) {

arrs[i] = arrInt[i + 1];

} else {

arrs[i] = arrInt[i];

}

}

for (int i = 0; i arrs.length; i++) {

System.out.print(arrs[i] + "\t");

}

break;

case 2:

System.out.println("請輸入新的元素：");

int num = input.nextInt();

arrInt[index] = num;

for (int i = 0; i arrInt.length; i++) {

System.out.print(arrInt[i] + "\t");

}

break;

default:

System.out.println("輸入有誤");

break;

}

}

Java課程設(shè)計(jì)源代碼 家族親屬關(guān)系查詢系統(tǒng)

public class Beetle extends Insect {

private int k = printInit("Beetle.k initialized");

public Beetle(){

System.out.println("k = " +k);

System.out.println("j = " + j);

}

private static int x2 = printInit("static Beetle.x2 initialized");

public static void main(String[] args){

System.out.println("Beetle constructor");

Beetle b = new Beetle();

}

}


分享標(biāo)題：java基礎(chǔ)課程設(shè)計(jì)代碼 java程序設(shè)計(jì)課程設(shè)計(jì)
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