找到了,很久以前写的一个简单画图,呵呵～当时要求用AWT写,很难受.
package net.miqiang.gui;
import java.awt.BasicStroke;
import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.Color;
import java.awt.Cursor;
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.GridLayout;
import java.awt.Label;
import java.awt.Panel;
import java.awt.RenderingHints;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.image.BufferedImage;
/**
* 简单画图板程序
* 好久没用 AWT 了,写起来真别扭,如果用 swing 会很舒服,有空再改写吧.
*
* @author 米强
*/
public class TestMain extends Frame {
// 画板
private Palette palette = null;
// 显示当前颜色的面板
private Panel nonceColor = null;
// 画笔粗细
private Label drawWidth = null;
// 画笔端点的装饰
private Label drawCap = null;
// 选取颜色按钮的监听事件类
private ButtonColorAction buttonColorAction = null;
// 鼠标进入按钮后光标样式的监听事件类
private ButtonCursor buttonCursor = null;
// 画笔样式的监听事件
private ButtonStrokeAction buttonStrokeAction = null;
* 构造方法
public TestMain() {
// 设置标题栏文字
super("简易画图板");
// 构造一个画图板
palette = new Palette();
// 画笔颜色选择器
Color [] color = {Color.black, Color.blue, Color.cyan, Color.darkGray, Color.gray, Color.green, Color.magenta, Color.orange, Color.pink, Color.red, Color.white, Color.yellow};
nonceColor = new Panel();
nonceColor.setBackground(Color.black);
paneColor.add(nonceColor);
buttonColorAction = new ButtonColorAction();
buttonCursor = new ButtonCursor();
for(int i = 0; i buttonColor.length; i◆◆){
buttonColor[i] = new Button();
buttonColor[i].setBackground(color[i]);
buttonColor[i].addActionListener(buttonColorAction);
buttonColor[i].addMouseListener(buttonCursor);
paneColor.add(buttonColor[i]);
}
pane.add(paneColor);
// 控制画笔样式
buttonStrokeAction = new ButtonStrokeAction();
Button [] buttonStroke = new Button[11];
buttonStroke[0] = new Button("1");
buttonStroke[10] = new Button("●");
drawCap = new Label("●", Label.CENTER);
drawWidth.setBackground(Color.lightGray);
drawCap.setBackground(Color.lightGray);
paneStroke.add(drawWidth);
for(int i = 0; i buttonStroke.length; i◆◆){
paneStroke.add(buttonStroke[i]);
buttonStroke[i].addMouseListener(buttonCursor);
buttonStroke[i].addActionListener(buttonStrokeAction);
buttonStroke[i].setName("width");
}else{
buttonStroke[i].setName("cap");
paneStroke.add(drawCap);
pane.add(paneStroke);
// 将画笔颜色选择器添加到窗体中
this.add(pane, BorderLayout.NORTH);
// 将画图板添加到窗体中
this.add(palette);
this.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
});
// 设置窗体 ICON 图标
this.setIconImage(Toolkit.getDefaultToolkit().createImage("images/palette.png"));
// 设置窗口的大小
// 设置窗口位置,处于屏幕正中央
this.setLocationRelativeTo(null);
// 显示窗口
this.setVisible(true);
* 程序入口
* @param args
* 字符串数组参数
public static void main(String[] args) {
new TestMain();
* 选取颜色按钮的监听事件类
class ButtonColorAction implements ActionListener {
public void actionPerformed(ActionEvent e) {
Color color_temp = ((Button)e.getSource()).getBackground();
nonceColor.setBackground(color_temp);
palette.setColor(color_temp);
* 鼠标进入按钮变换光标样式监听事件类
class ButtonCursor extends MouseAdapter {
public void mouseEntered(MouseEvent e) {
((Button)e.getSource()).setCursor(new Cursor(Cursor.HAND_CURSOR));
public void mouseExited(MouseEvent e) {
((Button)e.getSource()).setCursor(new Cursor(Cursor.DEFAULT_CURSOR));
* 设置画笔的监听事件类
class ButtonStrokeAction implements ActionListener {
Button button_temp = (Button) e.getSource();
String name = button_temp.getName();
if(name.equalsIgnoreCase("width")){
drawWidth.setText(button_temp.getLabel());
palette.setStroke(Float.parseFloat(button_temp.getLabel()));
}else if(name.equalsIgnoreCase("cap")){
drawCap.setText(button_temp.getLabel());
if(button_temp.getLabel().equals("■")){
palette.setStroke(BasicStroke.CAP_SQUARE);
}else if(button_temp.getLabel().equals("●")){
palette.setStroke(BasicStroke.CAP_ROUND);
* 画板类
class Palette extends Panel implements MouseListener, MouseMotionListener {
// 鼠标 X 坐标的位置
private int mouseX = 0;
// 上一次 X 坐标位置
private int oldMouseX = 0;
// 鼠标 Y 坐标的位置
private int mouseY = 0;
// 上一次 Y 坐标位置
private int oldMouseY = 0;
// 画图颜色
private Color color = null;
// 画笔样式
private BasicStroke stroke = null;
// 缓存图形
private BufferedImage image = null;
* 构造一个画板类
public Palette() {
this.addMouseListener(this);
this.addMouseMotionListener(this);
// 默认黑色画笔
color = new Color(0, 0, 0);
// 设置默认画笔样式
// 设置颜色
image.getGraphics().setColor(Color.white);
// 画背景
* 重写 paint 绘图方法
public void paint(Graphics g) {
super.paint(g);
// 图形抗锯齿
bg.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
// 设置绘图颜色
bg.setColor(color);
// 设置画笔样式
bg.setStroke(stroke);
// 画线,从上一个点到新的点
bg.drawLine(oldMouseX, oldMouseY, mouseX, mouseY);
// 将缓存中的图形画到画板上
* 重写 update 方法
public void update(Graphics g) {
this.paint(g);
* @return stroke
public BasicStroke getStroke() {
return stroke;
* @param stroke 要设置的 stroke
public void setStroke(BasicStroke stroke) {
this.stroke = stroke;
* 设置画笔粗细
* @param width
public void setStroke(float width) {
this.stroke = new BasicStroke(width, stroke.getEndCap(), stroke.getLineJoin());
* 设置画笔端点的装饰
* @param cap 参考 java.awt.BasicStroke 类静态字段
public void setStroke(int cap) {
this.stroke = new BasicStroke(stroke.getLineWidth(), cap, stroke.getLineJoin());
* @return color
public Color getColor() {
return color;
* @param color 要设置的 color
public void setColor(Color color) {
this.color = color;
public void mouseClicked(MouseEvent mouseEvent) {
* 鼠标按下
public void mousePressed(MouseEvent mouseEvent) {
this.oldMouseX = this.mouseX = mouseEvent.getX();
this.oldMouseY = this.mouseY = mouseEvent.getY();
repaint();
public void mouseReleased(MouseEvent mouseEvent) {
* 鼠标进入棋盘
public void mouseEntered(MouseEvent mouseEvent) {
this.setCursor(new Cursor(Cursor.CROSSHAIR_CURSOR));
* 鼠标退出棋盘
public void mouseExited(MouseEvent mouseEvent) {
this.setCursor(new Cursor(Cursor.DEFAULT_CURSOR));
* 鼠标拖动
public void mouseDragged(MouseEvent mouseEvent) {
this.oldMouseX = this.mouseX;
this.oldMouseY = this.mouseY;
this.mouseX = mouseEvent.getX();
this.mouseY = mouseEvent.getY();
public void mouseMoved(MouseEvent mouseEvent) {
按照题目要求编写的Item父类的Java程序如下
public class Item{
private String goods;
private int unitperbox;
public Item(String goods,int unitperbox){
this.goods=goods;
this.unitperbox=unitperbox;
public String ShowGoods(){
return goods;
public int ShowUnitPerBox(){
return unitperbox;
按照你的要求编写的Java程序如下
public?class?CC?{
public?static?void?main(String[]?args)?{
for(int?i=0;iN;i◆◆){
for(int?j=0;jN-i;j◆◆){
System.out.print("?");
for(int?j=0;j=i;j◆◆){
System.out.print((char)('a'◆i)◆"?");
System.out.println();
运行结果
我使用eclipse写的这个练习,首先给你截个图,抹掉的地方不是这个题的范畴,光标挡住的地方是ModelScore
然后,先是ModelScore代码：
package?Models;
public?class?ModelScore?{
private?double?mathScore;
private?double?englishScore;
private?double?javaScore;
public?ModelScore(){
public?int?getNumberOfField(){
public?ModelScore(double?mathScore,?double?englishScore,?double?javaScore){
this.mathScore?=?mathScore;
this.englishScore?=?englishScore;
this.javaScore?=?javaScore;
public?double?getMathScore(){
return?this.mathScore;
public?double?getEnglishScore(){
return?this.englishScore;
public?double?getJavaScore(){
return?this.javaScore;
public?void?setMathScore(double?mathScore){
public?void?setEnglishScore(double?englishScore){
public?void?setJavaScore(double?javaScore){
public?double?getAverageScore(){
public?String?toString(){
return?"Scores:[Math:?"?◆?getMathScore()?◆?
",?English:?"?◆?getEnglishScore()?◆?",?Java:?"?◆?getJavaScore()?◆?
",?AverageScore:?"?◆?getAverageScore()?◆?"]";
public?ModelScore?clone(){
ModelScore?score?=?new?ModelScore();
score.setMathScore(this.getMathScore());
score.setEnglishScore(this.getEnglishScore());
score.setJavaScore(this.getJavaScore());
return?score;
public?double?getScore(int?type){
if(type?==?type_Math){
return?mathScore;
if(type?==?type_English){
return?englishScore;
if(type?==?type_Java){
return?javaScore;
return?0;
然后是ModelStudent代码：
public?class?ModelStudent?{
private?String?studentID;
private?String?studentName;
private?ModelScore?score;
public?ModelStudent(){
public?ModelStudent(String?studentID,?String?studentName,?ModelScore?score){
this.studentID?=?studentID;
this.studentName?=?studentName;
this.score?=?score.clone();
public?String?getStudentID(){
return?this.studentID;
public?String?getStudentName(){
return?this.studentName;
public?ModelScore?getStudentScore(){
return?this.score.clone();
public?void?setStudentID(String?studentID){
public?void?setStudentName(String?studentName){
public?void?setStudentScore(ModelScore?score){
return?score.getAverageScore();
public?ModelStudent?clone(){
ModelStudent?student?=?new?ModelStudent();
student.setStudentID(studentID);
student.setStudentName(studentName);
student.setStudentScore(score.clone());
return?student;
return?"Student:[?ID:?"?◆?getStudentID()?◆?",?Name:?"
◆?getStudentName()?◆?",?"?◆?getStudentScore()?◆?"]";
public?String?getNameAndEverayScore(){
return?"Name:?"?◆?studentName?◆?",?average?score:?"?◆?getAverageScore();
最后是主函数所在的类StudentScoreTester代码：
import?java.util.ArrayList;
import?java.util.Scanner;
import?Models.ModelScore;
import?Models.ModelStudent;
public?class?StudentScoreTester?{
public?static?void?main(String[]?args)?throws?NumberFormatException{
Scanner?input?=?new?Scanner(System.in);
String?studentID?=?"?",?studentName,?searchedStudentName;
double?studentMathScore,?studentEnglishScore,?studentJavaScore;
ModelScore?studentScore;
ModelStudent?student;
ArrayListModelStudent?students?=?new?ArrayListModelStudent();
ArrayListModelStudent?studentsWithMaxMath,?studentsWithMinMath;
ArrayListModelStudent?studentsWithMaxEnglish,?studentsWithMinEnglish;
ArrayListModelStudent?studentsWithMaxJava,?studentsWithMinJava;
ArrayListModelStudent?searchedStudents;
double[]?averageScores;
double?averageScoreForMath,?averageScoreForEnglish,?averageScoreForJava;
double?maxScoreForMath,?maxScoreForEnglish,?maxScoreForJava;
double?minScoreForMath,?minScoreForEnglish,?minScoreForJava;
while(!studentID.equalsIgnoreCase("end")){
System.out.print("输入若干学生的学号,姓名,以及三科成绩（数学,英语,Java）,?以输入end作为结束输入：");
studentID?=?input.next();
if(studentID.equalsIgnoreCase("end")){
break;
studentName?=?input.next();
studentMathScore?=?Double.valueOf(input.next());
studentEnglishScore?=?Double.valueOf(input.next());
studentJavaScore?=?Double.valueOf(input.next());
studentScore?=?new?ModelScore(studentMathScore,?studentEnglishScore,?studentJavaScore);
student?=?new?ModelStudent(studentID,?studentName,?studentScore);
students.add(student);
System.out.println("*******************************");
System.out.println("计算出所有学生平均成绩,并以降序显示......");
sortByAverageScore(students);
for(ModelStudent?everyStudent:?students){
System.out.println(everyStudent.getNameAndEverayScore());
System.out.println("全组每科平均成绩......");
averageScores?=?calculateAverageScore(students);
averageScoreForMath?=?averageScores[type_Math];
averageScoreForEnglish?=?averageScores[type_English];
averageScoreForJava?=?averageScores[type_Java];
System.out.println("数学：?"?◆?averageScoreForMath);
System.out.println("英语：?"?◆?averageScoreForEnglish);
System.out.println("Java：?"?◆?averageScoreForJava);
System.out.println("每科最好以及最差成绩的学生......");
studentsWithMaxMath?=?findStudentWithMaxScore(students,?type_Math);
studentsWithMinMath?=?findStudentWithMinScore(students,?type_Math);
studentsWithMaxEnglish?=?findStudentWithMaxScore(students,?type_English);
studentsWithMinEnglish?=?findStudentWithMinScore(students,?type_English);
studentsWithMaxJava?=?findStudentWithMaxScore(students,?type_Java);
studentsWithMinJava?=?findStudentWithMinScore(students,?type_Java);
System.out.println("?#########################");
System.out.println("数学最高成绩......");
for(ModelStudent?studentWithMaxMath:?studentsWithMaxMath){
System.out.println(studentWithMaxMath.getStudentName()?◆?",?"?◆?studentWithMaxMath.getStudentScore().getScore(type_Math));
System.out.println("\n数学最低成绩......");
for(ModelStudent?studentWithMinMath:?studentsWithMinMath){
System.out.println(studentWithMinMath.getStudentName()?◆?",?"?◆?studentWithMinMath.getStudentScore().getScore(type_Math));
System.out.println("英语最高成绩......");
for(ModelStudent?studentWithMaxEnglish:?studentsWithMaxEnglish){
System.out.println(studentWithMaxEnglish.getStudentName()?◆?",?"?◆?studentWithMaxEnglish.getStudentScore().getScore(type_English));
System.out.println("\n英语最低成绩......");
for(ModelStudent?studentWithMinEnglish:?studentsWithMinEnglish){
System.out.println(studentWithMinEnglish.getStudentName()?◆?",?"?◆?studentWithMinEnglish.getStudentScore().getScore(type_English));
System.out.println("Java最高成绩......");
for(ModelStudent?studentWithMaxJava:?studentsWithMaxJava){
System.out.println(studentWithMaxJava.getStudentName()?◆?",?"?◆?studentWithMaxJava.getStudentScore().getScore(type_Java));
System.out.println("\nJava最低成绩......");
for(ModelStudent?studentWithMinJava:?studentsWithMinJava){
System.out.println(studentWithMinJava.getStudentName()?◆?",?"?◆?studentWithMinJava.getStudentScore().getScore(type_Java));
System.out.print("输入要查找的学生姓名：?");
input.nextLine();
searchedStudentName?=?input.nextLine();
searchedStudents?=?searchStudentsByName(students,?searchedStudentName);
System.out.println("查找结果是......");
if(searchedStudents.size()?!=?0){
for(ModelStudent?everyStudent:?searchedStudents){
System.out.println(everyStudent);
else{
System.out.println("查无此学生");
public?static?void?sortByAverageScore(ArrayListModelStudent?students){
for(int?i?=?0;?i?students.size()?-?1;?i◆◆){
for(int?j?=?i;?j?students.size();?j◆◆){
if(students.get(i).getAverageScore()?students.get(j).getAverageScore()){
ModelStudent?tempStudent?=?students.get(i);
students.set(i,?students.get(j));
students.set(j,?tempStudent);
public?static?double[]?calculateAverageScore(ArrayListModelStudent?students){
double[]?averageScore?=?new?double[students.get(0).getStudentScore().getNumberOfField()];
for(int?i?=?0;?i?students.size();?i◆◆){
ModelStudent?currentStudent?=?students.get(i);
averageScore[type_Math]?◆=?currentStudent.getStudentScore().getMathScore();
averageScore[type_English]?◆=?currentStudent.getStudentScore().getEnglishScore();
averageScore[type_Java]?◆=?currentStudent.getStudentScore().getJavaScore();
averageScore[type_Math]?=?(double)Math.round(averageScore[type_Math]/?students.size()?*?100)?/?100;
averageScore[type_English]?=?(double)Math.round(averageScore[type_English]/?students.size()?*?100)?/?100;
averageScore[type_Java]?=?(double)Math.round(averageScore[type_Java]/?students.size()?*?100)?/?100;
return?averageScore;
public?static?ArrayListModelStudent?findStudentWithMaxScore(ArrayListModelStudent?students,?int?type){
ArrayListModelStudent?studentsWithMaxScore?=?new?ArrayListModelStudent();
ModelStudent?studentWithMaxScore?=?students.get(0);
if(studentWithMaxScore.getStudentScore().getScore(type)?everyStudent.getStudentScore().getScore(type)){
studentWithMaxScore?=?everyStudent.clone();
if(studentWithMaxScore.getStudentScore().getScore(type)?==?everyStudent.getStudentScore().getScore(type)){
studentsWithMaxScore.add(everyStudent);
return?studentsWithMaxScore;
public?static?ArrayListModelStudent?findStudentWithMinScore(ArrayListModelStudent?students,?int?type){
public?static?ArrayListModelStudent?searchStudentsByName(ArrayListModelStudent?students,?String?studentName){
ArrayListModelStudent?resultStudents?=?new?ArrayListModelStudent();
if(everyStudent.getStudentName().equals(studentName)){
resultStudents.add(everyStudent);
return?resultStudents;
final ImageView iv=(ImageView)findViewById(R.id.iv);
Button bt=(Button)findViewById(R.id.bt);
bt.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View p1)
{
// TODO: Implement this method
if(iv.getDrawable()!=null)
iv.setImageResource(R.id.photo);
else iv.setImageResource(0);
以上就是土嘎嘎小编为大家整理的java编程图代码相关主题介绍,如果您觉得小编更新的文章只要能对粉丝们有用,就是我们最大的鼓励和动力,不要忘记讲本站分享给您身边的朋友哦！！