java简单的源代码 java代码源码

java求源代码

你是青鸟的吧 这我写过 有源码 这里怎么上传压缩包啊

package ghhh;

import java.util.Scanner;

public class DvD {

public static void main(String[] args) {

int state[]=new  int[6];

String name[]=new  String[6];

int date[]=new int[6];

int count[]=new int [6];

name[0]="权利的游戏";

name[1]="命运之夜";

name[2]="傲慢与偏见";

state[0]=1;

state[1]=0;

state[2]=1;

date[0]=13;

date[1]=0;

date[2]=9;

count[0]=23;

count[1]=23;

count[2]=23;

int n;

// boolean n=false;

do{

System.out.println("欢迎使用迷你DVD管理器");

System.out.println("1.新增DVD");

System.out.println("2.查看DVD");

System.out.println("3.删除DVD");

System.out.println("4.借出DVD");

System.out.println("5.归还DVD");

System.out.println("6.退出DVD");

Scanner input =new Scanner(System.in);

System.out.println("请选择：");

 n=input.nextInt();

switch(n){

case 1:

System.out.println("请输入要增加DVD的名称：");

String name1=input.next();

boolean flag=false;

for(int i=0;iname.length;i++){

if(name[i]==null){

name[i]=name1;

flag=true;

break;

}

}

if(flag){

System.out.println("新增DVD"+name1+"成功");

}else{

System.out.println("货架已满java简单的源代码！增加失败！");

}

System.out.println("请输入0返回！");

n=input.nextInt();

break;

case 2:

System.out.println("序号\t"+"状态\t"+"名称\t\t"+"借出日期\t"+"借出次数");

for(int i=0;iname.length;i++){

if(name[i]!=null){

String state1 =((state[i]==0)?"可借":"已借");

String date1=((date[i]==0)?"":date[i]+"日");

String count1=count[i]+"次";

System.out.println((i+1)+"\t"+state1+"\t"+name[i]+"\t"+date1+"\t\t"+count1);

}

}

System.out.println("请输入0返回！");

n=input.nextInt();

break;

case 3:

System.out.println("请输入要删除的DVD名称：");

String name2=input.next();

int index=-1;

boolean a=false;

boolean flag1=false;

for(int i=0;iname.length;i++){

if(name2.equals(name[i])state[i]==1){

System.out.println("此DVD已经借出java简单的源代码，无法删除");

a=true;

break;

}else if(name2.equals(name[i])state[i]==0){

a=true;

index=i;

flag1=true;

System.out.println("删除成功！");

break;

}

}

if(a==false){

System.out.println("没有找到相同名称的DVD！");

}

if(flag1){

for (int i=index;iname.length;i++){

if(i!=name.length-1){

name[i]=name[i+1];

state[i]=state[i+1];

date[i]=date[i+1];

count[i]=count[i+1];

}

name[name.length-1]=null;

state[name.length-1]=0;

date[name.length-1]=0;

count[name.length-1]=0;

}

}

                System.out.println("请输入0返回！");

  n=input.nextInt();

break;

case 4:

System.out.println("请输入要借出的DVD：");

 String name3=input.next();

 boolean a3=false;

 boolean b3=false;

 for(int i=0;iname.length;i++){

 if(name3.equals(name[i])  state[i]==1){

 System.out.println("该DVD已经借出");

 a3=true;

 }else if(name3.equals(name[i])  state[i]==0){

 do{

 System.out.println("请输入借出的日期：");

                         int m=input.nextInt();

 

 if(m31||m1){

 System.out.println("请重新输入日期：");

 b3=true;

 }else{

 date[i]=m; 

 state[i]=1;

 count[i]+=1;

 }

 

 }while(b3==true);

 System.out.println("借出成功！");

 a3=true;

 }

 }

 if(a3==false){

 System.out.println("没有该DVD");

 }

 System.out.println("请输入0返回！");

 n=input.nextInt();

break;

case 5:

System.out.println("请输入要归还的DVD：");

String name5=input.next();

boolean b5=false;

boolean m5=false;

for(int i=0;iname.length;i++){

if(name5.equals(name[i])  state[i]==1){

b5=true;

do{

System.out.println("请输入要归还DVD的日期：（归还日期请输入当月日期 1~31）");

int a5=input.nextInt();

    if(a531){

     System.out.println("请重新输入日期：");

     m5=true;

    }else if(a5date[i]){

     System.out.println("借出日期是"+date[i]+"日\t输入的日期不能小于借出的日期,请重新输入日期：");

     m5=true;

    }else{

     state[i]=0;

     System.out.println("归还成功");

     System.out.println("借出日期是："+date[i]+"归还日期是："+a5+"日\t租金一天一元：共"+(a5-date[i])+"元");

       date[i]=0;

       m5=false;

    }

    

}while(m5==true);

}else if (name5.equals(name[i])  state[i]==0){

System.out.println("该DVD未借出java简单的源代码，不可归还！");

b5=true;

}

}

if(b5==false){

System.out.println("没有该名称的DVDV");

}

System.out.println("请输入0返回！");

 n=input.nextInt();

break;

case 6:

n=1;

System.out.println("程序退出！");

break;

default:

if(n==0){

}else{

System.out.println("输入错误！请重新输入！");

n=0;

}

break;

}

}while(n==0);

System.out.println("谢谢使用！");

}

}

看看有没有问题 好久之前的java简单的源代码了

求JAVA源代码

import java.util.ArrayList;

import java.util.List;

import java.util.Scanner;

public class GradeStatistic {

public static void main(String[] args) {

GradeStatistic gs = new GradeStatistic();

ListMark list = new ArrayListMark();

float sum = 0;

while(true){

Scanner sc = new Scanner(System.in);

System.out.print("Please input student name: ");

String name = sc.nextLine();

if(name.equals("end")){

break;

}

System.out.print("Please input student score: ");

float score = sc.nextFloat();

sum += score;

list.add(gs.new Mark(name, score));

}

float max = list.get(0).getScore();

float min = list.get(0).getScore();

for(Mark mark: list){

if(max mark.getScore()){

max = mark.getScore();

}

if(min mark.getScore()){

min = mark.getScore();

}

}

float average = sum / list.size();

System.out.println("Average is: " + average);

System.out.println("Max is: " + max);

System.out.println("Min is: " + min);

}

private class Mark{

private String name;

private float score;

public Mark(String name, float score){

this.name = name;

this.score = score;

}

public String getName() {

return name;

}

public float getScore() {

return score;

}

}

}

----------------------

Please input student name: Zhang san

Please input student score: 100

Please input student name: Li Si

Please input student score: 91

Please input student name: Ec

Please input student score: 35

Please input student name: ma qi

Please input student score: 67

Please input student name: end

Average is: 73.25

Max is: 100.0

Min is: 35.0

求编写一个超级简单的Java的程序源代码

import java.awt.FlowLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPasswordField;

import javax.swing.JTextField;

public class Login {

public static void main(String args[]) {

LoginFrm frame = new LoginFrm();

}

}

class LoginFrm extends JFrame implements ActionListener{

JLabel nameLabel=new JLabel("用户名：");

JLabel pwdLabel=new JLabel("密码：");

JTextField name=new JTextField(10);

JPasswordField password=new JPasswordField(10);

JButton butnSure=new JButton("确定");

JButton butnCancel=new JButton("取消");

public LoginFrm() {

super("登陆");

setBounds(500, 200, 280, 220);

setVisible(true);

setLayout(null);

nameLabel.setBounds(45, 20, 100, 25);

add(nameLabel);

add(name);

name.setBounds(105, 20, 110, 25);

add(pwdLabel);

pwdLabel.setBounds(45, 60, 100, 25);

add(password);

password.setBounds(105, 60, 110, 25);

add(butnSure);

butnSure.setBounds(45, 100, 80, 25);

add(butnCancel);

butnCancel.setBounds(135, 100, 80, 25);

butnSure.addActionListener(this);

butnCancel.addActionListener(this);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

validate();//刷新

}

public void actionPerformed(ActionEvent e) {

if (e.getSource() ==butnSure){

System.out.println("用户名："+name.getText());

System.out.println("密码："+name.getText());

if("admin".equals(name.getText().trim())"123".equals(password.getText().trim())){

this.dispose();

new MainFrm("用户界面",name.getText().trim(),password.getText().trim());

}else {

JOptionPane.showMessageDialog(this, "用户不存在");

}

}else if(e.getSource()==butnCancel){

System.exit(1);

}

}

class MainFrm extends JFrame{

private JLabel info;

public MainFrm(String s,String name,String password) {

super(s);

setBounds(400, 200, 500, 400);

setLayout(new FlowLayout());

info=new JLabel("登陆成功，用户名："+name+"，密码："+password);

add(info);

setVisible(true);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

validate();

}

}

}

java简单记事本源代码 带解释

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import javax.swing.border.*;

class test implements ActionListener

{

JFrame frame;

JButton b1,b2,b3,b4,b5,b6,b7,b8,b9,b10,b11,b12,b13,b14,b15,b16,b17,b18,b19,b20,b21,b22,b23,b24,b25,b26,b27,b28,b29,b30,b31;

JTextArea ta;

JPanel p1,p2,p3,p4;

JMenuBar mb;

JMenu m1,m2,m3;

JMenuItem mt1,mt2,mt3,mt4,mt5,mt6,mt7;

JRadioButton rb1,rb2;

ButtonGroup bg;

Double d1=0.0,d2=0.0,d3=0.0,d4=1.0,d5=1.0;

String s1="",s2="",s3="",s4="";

int a=0;

char c1;

int i=0;

public static void main(String[] args)

{

test that=new test();

that.go();

}

public void go()

{

frame=new JFrame("计算器");

Container cp= frame.getContentPane();

cp.setLayout(new FlowLayout());

b1=new JButton("7");b2=new JButton("8");b3=new JButton("9");b4=new JButton("/");b5=new JButton("1/x");b6=new JButton("sin");b7=new JButton("log");

b8=new JButton("4");b9=new JButton("5");b10=new JButton("6");b11=new JButton("*");b12=new JButton("x^y");b13=new JButton("cos");b14=new JButton("ln");

b15=new JButton("1");b16=new JButton("2");b17=new JButton("3");b18=new JButton("-");b19=new JButton(new ImageIcon("lanying.gif"));b20=new JButton("tan");b21=new JButton("x^3");

b22=new JButton("0");b23=new JButton("+/-");b24=new JButton(".");b25=new JButton("+");b26=new JButton("√x");b27=new JButton("cot");b28=new JButton("x^2");

b29=new JButton("Backspace");b30=new JButton("C");b31=new JButton("=");

mb=new JMenuBar();

m1=new JMenu("文件(F)");m2=new JMenu("编辑(E)");m3=new JMenu("帮助(H)");

mt1=new JMenuItem("清零");mt2=new JMenuItem("退出");mt3=new JMenuItem("复制");mt4=new JMenuItem("粘贴");mt5=new JMenuItem("版本");mt6=new JMenuItem("标准型");mt7=new JMenuItem("科学型");

ta=new JTextArea(1,30);

p1=new JPanel();p2=new JPanel();p3=new JPanel();p4=new JPanel();

rb1=new JRadioButton("科学型");rb2=new JRadioButton("标准型");

bg=new ButtonGroup();

b1.setForeground(Color.blue);b1.setBackground(Color.white);b2.setForeground(Color.blue);b2.setBackground(Color.white);

b3.setForeground(Color.blue);b3.setBackground(Color.white);b8.setForeground(Color.blue);b8.setBackground(Color.white);

b9.setForeground(Color.blue);b9.setBackground(Color.white);b10.setForeground(Color.blue);b10.setBackground(Color.white);

b15.setForeground(Color.blue);b15.setBackground(Color.white);b16.setForeground(Color.blue);b16.setBackground(Color.white);

b17.setForeground(Color.blue);b17.setBackground(Color.white);b22.setForeground(Color.blue);b22.setBackground(Color.white);

b23.setForeground(Color.blue);b23.setBackground(Color.white);b24.setForeground(Color.blue);b24.setBackground(Color.white);

b4.setForeground(Color.red);b4.setBackground(Color.white);b11.setForeground(Color.red);b11.setBackground(Color.white);

b18.setForeground(Color.red);b18.setBackground(Color.white);b25.setForeground(Color.red);b25.setBackground(Color.white);

b5.setForeground(Color.blue);b5.setBackground(Color.white);b6.setForeground(Color.blue);b6.setBackground(Color.white);

b7.setForeground(Color.blue);b7.setBackground(Color.white);b12.setForeground(Color.blue);b12.setBackground(Color.white);

b13.setForeground(Color.blue);b13.setBackground(Color.white);b14.setForeground(Color.blue);b14.setBackground(Color.white);

b19.setForeground(Color.blue);b19.setBackground(Color.white);b20.setForeground(Color.blue);b20.setBackground(Color.white);

b21.setForeground(Color.blue);b21.setBackground(Color.white);b26.setForeground(Color.blue);b26.setBackground(Color.white);

b27.setForeground(Color.blue);b27.setBackground(Color.white);b28.setForeground(Color.blue);b28.setBackground(Color.white);

b29.setForeground(Color.red);b29.setBackground(Color.white);b30.setForeground(Color.red);b30.setBackground(Color.white);

b31.setForeground(Color.red);b31.setBackground(Color.white);

bg.add(rb1);bg.add(rb2);

p1.setBackground(Color.yellow);

cp.setBackground(Color.CYAN);

m1.setMnemonic(KeyEvent.VK_F);m2.setMnemonic(KeyEvent.VK_E);m3.setMnemonic(KeyEvent.VK_H);

m1.add(mt6);m1.add(mt7);m1.addSeparator();m1.add(mt1);m1.addSeparator();m1.add(mt2);m2.add(mt3);m2.addSeparator();m2.add(mt4);m3.add(mt5);

mb.add(m1);mb.add(m2);mb.add(m3);

frame.setJMenuBar(mb);

p2.setLayout(new GridLayout(4,7));

p3.setLayout(new GridLayout(1,3));

ta.setEditable(false);

p1.add(ta);

p2.add(b1);p2.add(b2);p2.add(b3);p2.add(b4);p2.add(b5);p2.add(b6);p2.add(b7);

p2.add(b8);p2.add(b9);p2.add(b10);p2.add(b11);p2.add(b12);p2.add(b13);p2.add(b14);

p2.add(b15);p2.add(b16);p2.add(b17);p2.add(b18);p2.add(b19);p2.add(b20);p2.add(b21);

p2.add(b22);p2.add(b23);p2.add(b24);p2.add(b25);p2.add(b26);p2.add(b27);p2.add(b28);

p3.add(b29);p3.add(b30);p3.add(b31);

Border etched=BorderFactory.createEtchedBorder();

Border border=BorderFactory.createTitledBorder(etched,"计算类型");

p4.add(rb1);p4.add(rb2);

p4.setBorder(border);

b2.setActionCommand("8");

b2.addActionListener(this);

cp.add(p1);cp.add(p4);cp.add(p2);cp.add(p3);

frame.setSize(400,330);

frame.setVisible(true);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

b1.setActionCommand("7");

b1.addActionListener(this);

b2.setActionCommand("8");

b2.addActionListener(this);

b3.setActionCommand("9");

b3.addActionListener(this);

b4.setActionCommand("/");

b4.addActionListener(this);

b5.setActionCommand("1/x");

b5.addActionListener(this);

b6.setActionCommand("sin");

b6.addActionListener(this);

b7.setActionCommand("log");

b7.addActionListener(this);

b8.setActionCommand("4");

b8.addActionListener(this);

b9.setActionCommand("5");

b9.addActionListener(this);

b10.setActionCommand("6");

b10.addActionListener(this);

b11.setActionCommand("*");

b11.addActionListener(this);

b12.setActionCommand("x^y");

b12.addActionListener(this);

b13.setActionCommand("cos");

b13.addActionListener(this);

b14.setActionCommand("ln");

b14.addActionListener(this);

b15.setActionCommand("1");

b15.addActionListener(this);

b16.setActionCommand("2");

b16.addActionListener(this);

b17.setActionCommand("3");

b17.addActionListener(this);

b18.setActionCommand("-");

b18.addActionListener(this);

b19.setActionCommand("x!");

b19.addActionListener(this);

b20.setActionCommand("tan");

b20.addActionListener(this);

b21.setActionCommand("x^3");

b21.addActionListener(this);

b22.setActionCommand("0");

b22.addActionListener(this);

b23.setActionCommand("+/-");

b23.addActionListener(this);

b24.setActionCommand(".");

b24.addActionListener(this);

b25.setActionCommand("+");

b25.addActionListener(this);

b26.setActionCommand("√x");

b26.addActionListener(this);

b27.setActionCommand("cot");

b27.addActionListener(this);

b28.setActionCommand("x^2");

b28.addActionListener(this);

b29.setActionCommand("Backspace");

b29.addActionListener(this);

b30.setActionCommand("C");

b30.addActionListener(this);

b31.setActionCommand("=");

b31.addActionListener(this);

rb1.setActionCommand("kxx");

rb1.addActionListener(this);

rb2.setActionCommand("bzx");

rb2.addActionListener(this);

}

public void actionPerformed(ActionEvent e) //throws Exception

{

if (e.getActionCommand()=="bzx")

{

b5.setEnabled(false);b6.setEnabled(false);b7.setEnabled(false);

b12.setEnabled(false);b13.setEnabled(false);b14.setEnabled(false);

b19.setEnabled(false);b20.setEnabled(false);b21.setEnabled(false);

b26.setEnabled(false);b27.setEnabled(false);b28.setEnabled(false);

}

if (e.getActionCommand()=="kxx")

{

b5.setEnabled(true);b6.setEnabled(true);b7.setEnabled(true);

b12.setEnabled(true);b13.setEnabled(true);b14.setEnabled(true);

b19.setEnabled(true);b20.setEnabled(true);b21.setEnabled(true);

b26.setEnabled(true);b27.setEnabled(true);b28.setEnabled(true);

}

if (e.getActionCommand()=="1")

{

ta.append("1");

}

if (e.getActionCommand()=="2")

{

ta.append("2");

}

if (e.getActionCommand()=="3")

{

ta.append("3");

}

if (e.getActionCommand()=="4")

{

ta.append("4");

}

if (e.getActionCommand()=="5")

{

ta.append("5");

}

if (e.getActionCommand()=="6")

{

ta.append("6");

}

if (e.getActionCommand()=="7")

{

ta.append("7");

}

if (e.getActionCommand()=="8")

{

ta.append("8");

}

if (e.getActionCommand()=="9")

{

ta.append("9");

}

if (e.getActionCommand()=="0")

{

ta.append("0");

}

if (e.getActionCommand()=="+")

{

s1=ta.getText();

d1 = Double.parseDouble(s1);

ta.setText("");

i=1;

}

if (e.getActionCommand()=="-")

{

s1=ta.getText();

d1 = Double.parseDouble(s1);

ta.setText("");

i=2;

}

if (e.getActionCommand()=="*")

{

s1=ta.getText();

d1 = Double.parseDouble(s1);

ta.setText("");

i=3;

}

if (e.getActionCommand()=="/")

{

s1=ta.getText();

d1 = Double.parseDouble(s1);

ta.setText("");

i=4;

}

if (e.getActionCommand()=="=")

{

s2=ta.getText();

d2=Double.parseDouble(s2);

if(i==1)

{

d3=d1+d2;

ta.setText( d3.toString());

}

if(i==2)

{

d3=d1-d2;

ta.setText( d3.toString());

}

if(i==3)

{

d3=d1*d2;

ta.setText( d3.toString());

}

if(i==4)

{

if(d2==0.0)

ta.setText("ERROR");

else

{

d3=d1/d2;

ta.setText( d3.toString());

}

}

if (i==5)

{

s2=ta.getText();

d2 = Double.parseDouble(s2);

for (int l=1;l=d2 ; l++)

{

d5=d5*d1;

}

ta.setText( d5.toString());

}

}

if (e.getActionCommand()=="C")

{

ta.setText("");

d4=1.0;

d5=1.0;

}

/*if (e.getActionCommand()=="Backspace")

{

s3=ta.getText();

a=s3.length();

//ta.cut(ta.select(a-1,a));

s4=ta.getText(1,3);

ta.setText(s4);

}

*/

if (e.getActionCommand()=="1/x")

{

s1=ta.getText();

d1 = Double.parseDouble(s1);

d2=1/d1;

ta.setText( d2.toString());

}

if (e.getActionCommand()==".")

{

ta.append(".");

}

if (e.getActionCommand()=="+/-")

{

s1=ta.getText();

d1 = Double.parseDouble(s1);

d2=0-d1;

ta.setText( d2.toString());

}

if (e.getActionCommand()=="x^2")

{

s1=ta.getText();

d1 = Double.parseDouble(s1);

d2=d1*d1;

ta.setText( d2.toString());

}

if (e.getActionCommand()=="x^3")

{

s1=ta.getText();

d1 = Double.parseDouble(s1);

d2=d1*d1*d1;

ta.setText( d2.toString());

}

if (e.getActionCommand()=="x^y")

{

s1=ta.getText();

d1 = Double.parseDouble(s1);

ta.setText("");

i=5;

// d2=d1*d1*d1;

// ta.setText( d2.toString());

}

if (e.getActionCommand()=="√x")

{

s1=ta.getText();

d1 = Double.parseDouble(s1);

d2=Math.sqrt(d1);

ta.setText( d2.toString());

}

if (e.getActionCommand()=="x!")

{

s1=ta.getText();

d1 = Double.parseDouble(s1);

if (d10)

{

ta.setText( "error");

}

else if (d1==0)

{

ta.setText( "0.0");

}

else {

for (int k=1;k=d1 ;k++ )

d4=d4*k;

ta.setText( d4.toString());

}

}

if (e.getActionCommand()=="sin")

{

s1=ta.getText();

d1 = Double.parseDouble(s1);

d2=Math.sin(3.1415926*d1/180);

ta.setText( d2.toString());

}

}

}

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