java项目实践之电梯模拟调度算法

import java.awt.*; import javax.swing.*; import java.awt.event.*; import java.util.*; public class TestElevator { public static void main(String[] args) { SimpleFrame frame = new SimpleFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //退出模式，退出应用程序后的默认窗口关闭操作 frame.setLocation(40, 40); //窗口位置坐标 frame.show(); } } class SimpleFrame extends JFrame { public SimpleFrame() { setSize(690, 510); setTitle("电梯模拟"); SimplePanel panel = new SimplePanel(); this.add(panel); } } class SimplePanel extends JPanel { private CanvasOuter myCanvasOuter;//显示外部按钮的画布类，位于左侧 private CanvasInner myCanvasInner;//显示内部按钮的画布类，位于右侧 private Elevator[] s;//电梯数组 private Found foundThread = new Found();//任务分配线程 public final static int NUM = 2; //电梯数 public final static int FLOOR = 6; //楼层 final int UP = 0; //电梯状态初始化 final int DOWN = 1; final int PAUSE = 2; final int OPEN = 3; final int CLOSE = 4; public SimplePanel() { setLayout(null); myCanvasOuter = new CanvasOuter(); myCanvasInner = new CanvasInner(); add(myCanvasOuter); add(myCanvasInner); s = new Elevator[NUM]; for (int i = 0; i < s.length; i++) { s[i] = new Elevator(i); } for (int i = 0; i < s.length; i++) { s[i].start();// } foundThread.start(); } class Found extends Thread //任务分配线程 { private ArrayList tasks; private Task task; public Found() { tasks = new ArrayList(); } public void addTask(int i, boolean flag) { tasks.add(new Task(i, flag)); } public void run() { while (true) { if (!tasks.isEmpty()) { task = (Task) (tasks.get(0)); int i = task.floor; int minFloor = FLOOR; int id = 0; boolean f = task.isUp; boolean isFound = false; if (f)//要上楼 { for (int j = 0; j < NUM; j++)//电梯数 { if ((s[j].state == PAUSE) || (s[j].current < i && s[j].state == UP))//停或者电梯正在从下往上 { int distance = Math.abs(i - s[j].current); if (distance < minFloor) { id = j; minFloor = distance; isFound = true; } } } } else//下楼 { for (int j = 0; j < NUM; j++) { if ((s[j].state == PAUSE) || (s[j].current > i && s[j].state == DOWN))//停或正在从上往下 { int distance = Math.abs(i - s[j].current); if (distance < minFloor) { id = j; minFloor = distance; isFound = true; } } } } if (isFound) { s[id].addFloor(i); tasks.remove(0); } } try { sleep(100); } catch (InterruptedException e) { System.out.println("Interrupted"); } } } class Task//任务：要到几楼，上去还是下去 { private int floor; private boolean isUp; public Task(int i, boolean flag) { floor = i; isUp = flag; } } } public void resetOuterB(int floor) //设置外部的按钮 { myCanvasOuter.bUp[floor].setEnabled(true); myCanvasOuter.bDown[floor].setEnabled(true); myCanvasOuter.bUp[floor].setForeground(null); myCanvasOuter.bDown[floor].setForeground(null); } public void drawButtons(int id)//设置内部按钮 { for (int i = 0; i < FLOOR; i++) { if (s[id].destinations.contains(new Integer(i))) { myCanvasInner.interPanels[id].interB[i].setBackground(Color.YELLOW); } else { myCanvasInner.interPanels[id].interB[i].setBackground(null); } } } class Elevator extends Thread //电梯主类 { private int id; //电梯标识号 private int floor = FLOOR; //总层数 private JPanel myPanel = new JPanel(); private JPanel myPanel1 = new JPanel(); private JButton numB; private JButton stateB = new JButton("---"); private JButton[] buttons; //电梯组成 public int current = 1; //所在楼层 public int state = PAUSE; //上下行标志 private JButton floorB = new JButton("1"); private ArrayList destinations; //目的地链表 public Elevator(int x) { id = x; myPanel1.setLayout(new GridLayout()); numB = new JButton("第"+(x+1)+"号电梯"); myPanel1.add(numB); myPanel.setLayout(new GridLayout(floor + 2, 1)); floorB.setBackground(Color.WHITE); myPanel.add(floorB); myPanel.add(stateB); buttons = new JButton[FLOOR]; for (int i = buttons.length - 1; i >= 0; i--) { buttons[i] = new JButton(); buttons[i].setBackground(Color.LIGHT_GRAY); myPanel.add(buttons[i]); } buttons[0].setBackground(Color.RED); myPanel1.setBounds(100 * id + 250, 10, 100, 50); myPanel.setBounds(100 * id + 250, 60, 100, 400); add(myPanel1); add(myPanel); destinations = new ArrayList(); } public void addFloor(int i) //响应外部按钮 { if (destinations.contains(new Integer(i))) return; if (state == PAUSE) { destinations.add(new Integer(i)); buttons[i].setBackground(Color.YELLOW); if (current > i) { state = DOWN; } else { state = UP; } return; } if (state == UP) { for (int j = 0; j < destinations.size(); j++) { if (i < ((Integer) (destinations.get(j))).intValue()) { destinations.add(j, new Integer(i)); buttons[i].setBackground(Color.YELLOW); } } } if (state == DOWN) { for (int j = 0; j < destinations.size(); j++) { if (i > ((Integer) (destinations.get(j))).intValue()) { destinations.add(j, new Integer(i)); buttons[i].setBackground(Color.YELLOW); } } } destinations.add(new Integer(i)); buttons[i].setBackground(Color.YELLOW); } public void wantToFloor(int i) //响应内部按钮 { if (destinations.contains(new Integer(i))) return; if (state == PAUSE) { destinations.add(new Integer(i)); buttons[i].setBackground(Color.YELLOW); if (current > i + 1) { state = DOWN; } else { state = UP; } return; } if (state == UP) { if (current > i + 1) return; for (int j = 0; j < destinations.size(); j++) { if (i < ((Integer) (destinations.get(j))).intValue()) { destinations.add(j, new Integer(i)); buttons[i].setBackground(Color.YELLOW); return; } } } if (state == DOWN) { if (current < i) return; for (int j = 0; j < destinations.size(); j++) { if (i > ((Integer) (destinations.get(j))).intValue()) { destinations.add(j, new Integer(i)); buttons[i].setBackground(Color.YELLOW); return; } } } destinations.add(new Integer(i)); buttons[i].setBackground(Color.YELLOW); } public void setStateB() //设置运行状态按钮 { if (state == PAUSE) { stateB.setText("---"); stateB.setForeground(null); myCanvasInner.interPanels[id].stateB.setText("---"); myCanvasInner.interPanels[id].stateB.setForeground(null); myCanvasOuter.stateB1.setText("---"); myCanvasOuter.stateB1.setForeground(null); myCanvasOuter.stateB2.setText("---"); myCanvasOuter.stateB2.setForeground(null); } else if (state == UP) { stateB.setText("上"); stateB.setForeground(Color.RED); myCanvasInner.interPanels[id].stateB.setText("上"); myCanvasInner.interPanels[id].stateB.setForeground(Color.RED); if(id==0) { myCanvasOuter.stateB1.setText("上"); myCanvasOuter.stateB1.setForeground(Color.RED); } if(id==1) { myCanvasOuter.stateB2.setText("上"); myCanvasOuter.stateB2.setForeground(Color.RED); } } else { stateB.setT