模拟实现一个多功能电子设备，它既能播放mp3歌曲，同时还能够借助播放器的界面来监测脉动

package play; /* * View.java * * Created on __DATE__, __TIME__ */ /** * * @author __USER__ */ import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import java.io.File; import java.text.DecimalFormat; import java.util.ArrayList; import javax.swing.*; import javax.swing.filechooser.FileFilter; public class View extends javax.swing.JFrame implements ActionListener,ItemListener,ComObserver,Runnable{ /** Creates new form View */ public View(Control control,Model model) { this.controller=control; this.model=model; this.filepath=""; model.registerObserver((ComObserver)this); this.thread=null; initComponents(); } /** This method is called from within the constructor to * initialize the form. * WARNING: Do NOT modify this code. The content of this method is * always regenerated by the Form Editor. */ //GEN-BEGIN:initComponents // <editor-fold defaultstate="collapsed" desc="Generated Code"> private void initComponents() { buttonGroup1 = new javax.swing.ButtonGroup(); jLabel1 = new javax.swing.JLabel(); jLabel2 = new javax.swing.JLabel(); jTextField1 = new javax.swing.JTextField(); jButton1 = new javax.swing.JButton(); jButton1.setFocusPainted(true); jButton2 = new javax.swing.JButton(); jButton3 = new javax.swing.JButton(); jProgressBar1 = new javax.swing.JProgressBar(); jProgressBar1.setBackground(Color.yellow);//显示节拍的条 this.jProgressBar1.setMaximum(500); jProgressBar1.setValue(0); jPanel1 = new JPanel(); jPanel1.setBackground(Color.lightGray); jRadioButton1 = new javax.swing.JRadioButton(); jRadioButton2 = new javax.swing.JRadioButton(); jMenuBar1 = new javax.swing.JMenuBar(); jMenu1 = new javax.swing.JMenu(); jMenuItem1 = new javax.swing.JMenuItem(); jMenu2 = new javax.swing.JMenu(); jMenuItem2 = new javax.swing.JMenuItem(); jMenuItem3 = new javax.swing.JMenuItem(); jMenuItem4 = new javax.swing.JMenuItem(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); // setBackground(Color.cyan); setTitle("mp3播放器~~脉动监测"); jLabel1.setText("节拍/脉动"); jLabel1.setFont(new java.awt.Font("楷体_GB2312", 0, 13)); jLabel1.setForeground(Color.blue); jLabel2.setText("BPM: "); jLabel2.setFont(new java.awt.Font("楷体_GB2312", 0, 13)); jLabel2.setForeground(Color.blue); jTextField1.setToolTipText("输入一个值, 最大为 "+MP3Model.MAXVALUE); jButton1.setText("设置"); jButton1.setFont(new java.awt.Font("楷体_GB2312", 0, 13)); jButton2.setText("<<"); jButton2.setToolTipText("减 1"); jButton3.setText(">>"); jButton3.setToolTipText("加 1"); javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout( jPanel1); jPanel1.setLayout(jPanel1Layout); // jPanel1.setBackground(Color.cyan); jPanel1Layout.setHorizontalGroup(jPanel1Layout.createParallelGroup( javax.swing.GroupLayout.Alignment.LEADING).addGap(0, 401, Short.MAX_VALUE)); jPanel1Layout.setVerticalGroup(jPanel1Layout.createParallelGroup( javax.swing.GroupLayout.Alignment.LEADING).addGap(0, 53, Short.MAX_VALUE)); buttonGroup1.add(jRadioButton1); jRadioButton1.setSelected(true); jRadioButton1.setText("MP3播放器"); jRadioButton1.setFont(new java.awt.Font("楷体_GB2312", 0, 13)); buttonGroup1.add(jRadioButton2); jRadioButton2.setText("监测脉动"); jRadioButton2.setFont(new java.awt.Font("楷体_GB2312", 0, 13)); jMenu1.setText("文件"); jMenu1.setFont(new java.awt.Font("楷体_GB2312", 0, 13)); jMenu1.setToolTipText("选择要播放的文件"); jMenuItem1.setText("选择"); jMenuItem1.setFont(new java.awt.Font("楷体_GB2312", 0, 13)); jMenu1.add(jMenuItem1); jMenuBar1.add(jMenu1); jMenu2.setText("操作选项"); jMenu2.setFont(new java.awt.Font("楷体_GB2312", 0, 13)); jMenuItem2.setText("开始"); jMenuItem2.setFont(new java.awt.Font("楷体_GB2312", 0, 13)); jMenu2.add(jMenuItem2); jMenuItem3.setText("暂停"); jMenuItem3.setFont(new java.awt.Font("楷体_GB2312", 0, 13)); jMenu2.add(jMenuItem3); jMenuItem4.setText("退出"); jMenuItem4.setFont(new java.awt.Font("楷体_GB2312", 0, 13)); jMenu2.add(jMenuItem4); jMenuBar1.add(jMenu2); setJMenuBar(jMenuBar1); javax.swing.GroupLayout layout = new javax.swing.GroupLayout( getContentPane()); getContentPane().setLayout(layout); layout .setHorizontalGroup(layout .createParallelGroup( javax.swing.GroupLayout.Alignment.LEADING) .addGroup( layout .createSequentialGroup() .addGap(69, 69, 69) .addGroup( layout .createParallelGroup( javax.swing.GroupLayout.Alignment.LEADING) .addGroup( layout .createParallelGroup( javax.swing.GroupLayout.Alignment.TRAILING) .addComponent( jLabel1) .addGroup( layout .createSequentialGroup() .addComponent( jLabel2) .addGap( 13, 13, 13))) .addComponent( jRadioButton1)) .addPreferredGap( javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup( layout .createParallelGroup( javax.swing.GroupLayout.Alignment.TRAILING) .addGroup( layout .createSequentialGroup() .addGroup( layout .createParallelGroup( javax.swing.GroupLayout.Alignment.LEADING) .addGroup( layout .createSequentialGroup() .addComponent( jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 70, javax.swing.GroupLayout.PREFERRED_SIZE) .addPreferredGap( javax.swing.LayoutStyle.ComponentPlacement.RELATED, 10, Short.MAX_VALUE) .addComponent( jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 71, javax.swing.GroupLayout.PREFERRED_SIZE) .addGap( 26, 26, 26)) .addGroup( javax.swing.GroupLayout.Alignment.TRAILING, layout .createSequentialGroup() .addGroup( layout .createParallelGroup( javax.swing.GroupLayout.Alignment.TRAILING) .addComponent( jTextField1, javax.swing.GroupLayout.DEFAULT_SIZE, 170, Short.MAX_VALUE) .addComponent( jProgressBar1, javax.swing.GroupLayout.DEFAULT_SIZE, 170, Short.MAX_VALUE)) .addPreferredGap( javax.swing.Lay