一个简单的音乐播放器的java代码

import java.awt.*;import java.awt.eve nt.*;import java.io.*;import java.util.*;import javax.swi ng.*;import javax.media.bea n.p layerbea n.*;import java.i o.I OExce pti on;import javax.swi ng.JO ptio nPane;import java.awt.*;p ublic class lyt exte nds JFrame imp leme nts Runn able {p ublic Media Player soumd1;p rivate JButt on p laySo und, stopsound, tjia n,loopSound; p rivate JMe nultem jmiOpenj miSavejmiExitjmiAbout;p ublic JPanel jp 1, j p2, j p3, j p4;p ublic JList jl;p rivate JButt on last, n ext, stop;p ublic Vector vector, min gche ng;boolea n fo = false, geshi = false;JLabel jl1, jl2, sj1, sj2;JTextField jt1, jt2;int a = 0, b = 0, you = 1, mm = 0;p ublic lyt() {super("200842018java 音乐播放器”)； soumd1 = new Media Player();Container c = getC ontentPan e();c.setLayout (new FlowLayout());min gche ng = new Vector();jp1 = new JPan el();c.add(j p1);JMe nuBar mb=new JMe nuBar();setJMe nuBar(mb);JMenu fileMenu=new JMenu(” 文件");mb.add(fileMe nu);JMenu helpMenu=new JMenu(” 帮助"); mb.add(hel pMenu); fileMenu.add(jmiOpen=new JMenultem(” 打开"));fileMenu.add(jmiSave=new JMenultem(” 播放"));helpMenu.add(jmiAbout=new JMenultem(” 关于"));JPanel jp2 = new JPan el();jp 2.setLayout (new FlowLayout());jp2.add(last = new JButton(” 后退"));jp2.add(playSound = new JButton(” 播放"));jp2.add(tjian = new JButton(” 添加"))；jp2.add(next = new JButton("前进"));jp2.add(stopsound = new JButton(” 停止"));jp2.add(loopSound= new JButton(” 循环")); getCo ntentPan e().add(j p2, BorderLayout.SOUTH);jp2 = new JPan el(); jp 2.add( playSo un d); jp 2.add(st opsoun d); c.add(j p2);jp4 = new JPan el(); sj1 = new JLabel(); sj2 = new JLabel(); jp 4.add(sj1);jp 4.add(sj2);c.add(j p4);vector = new Vector(); jl = new JList( min gche ng); jl.setVisibleRowCount(4); jl.setFixedCellHeight(30); jl.setFixedCellWidth(265);jl.setSelectio nM ode(ListSelectio nM odel.SINGLE_SELECTION)c.add( new JScroll Pan e(jl));jp3 = new JPan el();jp 3.add(tjia n);c.add(j p3);try {Stri ng s = "d:\\music.txt";Object Inpu tStream input = new Object Inpu tStream( new FileI nputStream(s));lujin a1 = (lujin) inpu t.readObject();min gche ng = a1.b;vector = a1.a;jl.setListData( min gche ng);}catch (Exce pti on e) {System.out.printin("D盘没有保存音乐文件");}jmiOpen .addActio nListe ner(new Acti on Liste ner() { p ublic void actionP erformed(Acti onEvent eve nt) { JFileChooser fileChooser = newJFileChooser(); fileChooser•setFileSelectio nMode(JFileChooser.FILES_AND_DIRECTORIES)；fileChooser.setCurre ntDirectory( new File(".")); fileChooser.setFileFilter( newjavax.swi ng.filechooser.FileFilter() {p ublic boolea n acce pt(File file) {String n ame = file.getName().toLowerCase(); retur n n ame.endsWith(".m p3")II file.isDirectory();p ublic String getDescri pti on() {return "音乐文件(*.mp3)";}});if (fileChooser.show Open Dialog(lyt.this)== JFileChooser.A PP ROVE_O PTION) {Stri ng fileName = fileChooser.getSelectedFile().getAbsolute Path(); vector.add(fileName); Strin gBuffer buffer = daoxu(fileName); min gche ng.add(buffer);}}})；tjia n.addActio nListe ner(new Acti on Liste ner() {p ublic void actionP erformed(Act ionEvent event) {JFileChooser fileChooser = new JFileChooser(); fileChooser.setFileSelectio nMode(JFileChooser.FILES_AND_DIRECTORIES );fileChooser.setCurre ntDirectory( new File("."));fileChooser.setFileFilter( new javax.swi ng.filechooser.FileFilter() { p ublic boolea n acce pt(File file) { Stri ng n ame =file.getName().toLowerCase();retur n n ame.e ndsWith(".m p3")II file.isDirectory();P ublic String getDescri pti on() {return "音乐文件(*.mp3)";}});if (fileChooser.show Open Dialog(lyt.this)== JFileChooser.A PP ROVE_O PTION) {Stri ng fileName = fileChooser.getSelectedFile().getAbsolute Path(); vector.add(fileName); Strin gBuffer buffer = daoxu(fileName); min gche ng.add(buffer);}}});jmiSave.addActio nListe ner(new Acti on Liste ner() {p ublic void actionP erformed(Act ionEvent e) {if (jl.getSelectedI ndex() >= 0) {String yy = (Stri ng) vector.get(jl.getSelected In dex());File ff = new File(yy);if (ff.exists()) {if (yy.matches("[\\S\\s]*.m p3") ||yy.matches("[\\S\\s]*.m p3")) {if (soumd1 != n ull) {a = 0;b = 0; you = 0; soumd1.st op();}soumd1.setMediaLocati on ("file:/" +yy);fo = true;soumd1.start();geshi = true;try {Thread.slee p(500);}catch (Interrup tedExce pti on eee) { }}elseJOp tio nPan e.showMessageDialog( null,"无法播放");}elseJOp ti onPan e.showMessageDialog( null,"此歌曲已经存在");}elseJOptionPane.showMessageDialog(null,"请选择音乐文件"); }});loopSoun d.addAct ion Liste ner(new Action Liste ner() {p ublic void actionP erformed(Acti onEvent e) {if (jl.getSelectedI ndex() >= 0) {String yy = (Stri ng) vector.get(jl.getSelectedI ndex());File ff = new File(yy);if (ff.exists()) {if (yy.matches("[\\S\\s]*.m p3")|| yy.matches("[\\S\\s]*.M P3")) {if (soumdl != n ull) {a = 0;b = 0;you = 0;soumdi.st op();} soumdI.setMediaLocati on ("file:/" + yy);fo = true;soumd1.start();geshi=true;try {Thread.slee p(500);} catch (Interrup tedExce ptio n we) {}} elseJOp tio nPan e.showMessageDialog( null,"不支持此格式，无法播放");} elseJOp ti onPan e.showMessageDialog( null,"此歌曲文件已经存在");}elseJOptionPane.showMessageDialog(null,"请选择音乐文件");}})；p laySo un d.addActi on Liste ner(new Action Liste ner() { public void actionP erformed(Act ionEvent e) { if(jl.getSelectedI ndex() >= 0) {String yy = (Stri ng) vector.get(jl.getSelectedI ndex());File ff = new File(yy);if (ff.exists()) {if (yy.matches("[\\S\\s]*.m p3") || yy.matches("[\\S\\s]*.m p3")) { if (soumd1 != n ull) {a = 0;b = 0;you = 0;soumd1.st op();}soumd1.setMediaLocati on ("file:/" + yy); fo = true;soumd1.start(); geshi = true;try {Thread.slee p(500);}catch (Interrup tedExce pti on eee) {}} elseJOp tio nPan e.showMessageDialog( null,"无法播放");}elseJOp tio nPan e.showMessageDialog( nu II,"此歌曲已经存在");}elseJOptionPane.showMessageDialog(null,"请选择音乐文件");}});stopsoun d.addActi on Liste ner(new Action Liste ner() { p ublic void actionP erformed(Act ionEvent e) { a = 0;b = 0;you = 0;mm = 0;geshi = false;fo = false;sj1.setText( null);sj2.setText( null);if (jl.getSelectedI ndex() >= 0)soumd1.st op();}})；jl.addMouseListe ner(new MouseAda pter() {p ublic void mouse Pressed(MouseEve nt eve nt) { if (event.getClickCou nt() == 2) {if (jl.getSelectedI ndex() >= 0) {String yy = (Stri ng)vector.get(jl.getSelectedI ndex());File ff = new File(yy);if (ff.exists()) {if (yy.matches("[\\S\\s]*.m p3") ||yy.matches("[\\S\\s]*.m p3")) {if (soumdl != n ull) {a = 0;b = 0;you = 0;soumdi.st op();}soumdI.setMediaLocati on ("file:/" + yy); fo = true;soumd1.start();geshi = true;try {Thread.slee p(500);}catch (Interrup tedExce pti on e) {}}elseJOp tio nPan e.showMessageDialog( null."无法播放”);} elseJOp tio nPan e.showMessageDialog( null,"此歌曲已经存在");}}if (eve nt.isMetaDow n()) {if (jl.getSelectedI ndex() >= 0) { int a = jl.getSelected In dex();>=jt1.setText( min gche ng.get(jl.getSelectedl ndex()) + "" jt2.setText(vector.get(jl.getSelectedl ndex()) + "");}}}});addWi ndowListe ner(new Win dowAda pter() {p ublic void win dowClos in g(Wi ndowEve nt e) { String s = "d:\\music.txt";mmm(vector, min gche ng, s); System.exit(0);}});setSize(370, 270);setVisible(true);}p ublic void run() {while (true) {Date now = new Date();try {Thread.slee p(1000);}catch (Interrup tedExce pti on e) {}if (geshi) {you = (int) soumd1.getMediaTime().getSec on ds();mm = you % 60;if (you != 0)if (you % 60 == 0) {b++;}sj1.setText(b + ":" + mm);}}}p ublic Strin gBuffer daoxu(Stri ng fileName) {Stri ng mc ="";for (int i = fileName .len gth(); i >= 1; i--) {if (fileName.charAt(i - 1) == '\\') break;mc += fileName.charAt(i - 1);}Stri ngBuffer buffer = new Stri ngBuffer(mc);Stri ngBuffer mm = buffer.reverse(); return mm;}p ublic void mmm(Vector vector, Vector min gche ng, Stri ng lujin) { lujin a = new lujin( vector, min gche ng);try {ObjectOut pu tStream out put = newObjectOut putStream( new FileOut putStream(luji n));out pu t.writeObject(a);out pu t.flush();out pu t.close();}catch (Exce pti on e) {}}p ublic static void main( Stri ng agrs[]) {lyt s = new lyt();Thread t1 = new Thread(s);t1.start();s.setDefaultCloseO peratio n(JFrame.EXIT_ON_CLOSE);}class lujinimp leme nts Serializable {Vector a = new Vector();Vector b = new Vector。