java为什么当我使用多线程时，音乐仍然可以播放，但移动乐谱的显示消失了？
我想在屏幕上显示一个移动乐谱，同时播放相应的音乐，这样用户就可以在不翻页的情况下阅读乐谱，并随着移动乐谱一起听到音乐。当我在Test7中单独显示移动分数时。java，当我在Tes11中单独播放音乐时。java，它们都工作得很好。但当我在Test21中使用多线程组合它们时。在爪哇，只有音乐在播放，但移动的乐谱根本没有显示。测试7。java，Test11。java和Test21。以下列出了java：
//Test7.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import java.io.*;
import sun.audio.*;
import java.io.IOException;
class MyPanel extends JPanel{
int x[] = new int[59];
int y[] = new int[59];
int width[] = new int[59];
int height = 20;
Color color[] = new Color[59];//the color of each note
//一根紫 竹 直 苗 苗, 5 ĺ 65 3 │ 52 32 1 ─
//送給寶寶做管 簫, 6 ĺ 3 5 6 3 │5 ─ ─ ─
//簫兒對準口, ĺ 6 3 6 5 ─
//口兒對準簫, 6 5 3 6 5 ─
//簫 中吹 出 新 時 調, 56 ĺ 65 3 │ 52 32 1 ─
//小寶寶, 小寶 寶, 1 13 2 ─ | 1 13 2 ─
//咿底 咿底學會了.啊～～ 6 ĺ 6 ĺ 2 6 | 5 . 6 23 56│ 5 ─ ─ ─
String[] lyric = {"一", " 根", "紫～", "竹", "直～", "苗～", "苗,", "送", "給", "寶", "寶", "做", "管", "簫,",
"簫", "兒", "對", "準", "口,", "口", "兒", "對", "準", "簫,",
"簫～", "中", "吹～", "出", "新～", "時～ ", "調,",
"小", "寶～", "寶,", "小", "寶～", "寶,",
"咿", "底", "咿", "底", "學 ", "會", "了,", "啊 ～ ～ ～"};//共45個
int[] numNotes = {1, 1, 2, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
2, 1, 2, 1, 2, 2, 1,
1, 2, 1, 1, 2, 1,
1, 1, 1, 1, 1, 1, 1, 6};//共45個
int[][] notes = {{5,2},{8,2},{6,1},{5,1},{3,2},{5,1},{2,1},{3,1},{2,1},{1,4},{6,1},{8,1},
{3,1},{5,1},{6,2},{3,2},{5,8},{8,1},{6,1},{3,1},{6,1},{5,4},{6,1},{8,1},
{3,1},{6,1},{5,4},{5,1},{6,1},{8,2},{6,1},{5,1},{3,2},{5,1},{2,1},{3,1},
{2,1},{1,4},{1,2},{1,1},{3,1},{2,4},{1,2},{1,1},{3,1},{2,4},{6,1},{8,1},
{6,1},{8,1},{9,2},{6,2},{5,3},{6,1},{2,1},{3,1},{5,1},{6,1},{5,8}};//共59個
String[] simplifiedNote = {"| 5", " 1", " 6", "5", "3", "| 5", "2", "3", "2", "1 - ", "| 6", "1",
"3", "5", "6", " 3", " 5 - - -", "| 1", "6", "3", "6", "5 - ", "| 6", "1",
"3", "6", "5 -", "| 5", "6", "1", "6", "5", " 3", "| 5", "2", "3",
"2", "1 -", "| 1", "1", "3", "2 -", "| 1", "1", "3", "2 -", "| 6", "1",
"6", "1", "2", "6", "| 5 .", "6", "2", "3", "5", "6", "| 5 - - - "};//共59個
Color color0 = new Color(255,255,255); //白色
Color color1 = new Color(255,0,0); //紅色
Color color2 = new Color(255,165,0); //橙色
Color color3 = new Color(255,255,0); //黃色
Color color4 = new Color(0,128,0); //綠色
Color color5 = new Color(0,0,255); //藍色
Color color6 = new Color(75,0,130); //靛色
Color color7 = new Color(100,0,153); //紫色
Color color8 = new Color(153,0,0); //暗紅
Color color9 = new Color(0,0,0); //黑色
Color color10 = new Color(37,255,255); //淺藍
public void display(){
for (int i = 0;i < notes.length; i++) {
//System.out.println("notes[" + i + "][0] = " + notes[i][0]);
switch (notes[i][0]) {
case 1:
y[i] = 400;
color[i] = color1;
break;
case 2:
y[i] = 400 - 20;
color[i] = color2;
break;
case 3:
y[i] = 400 - 20*2;
color[i] = color3;
break;
case 4:
y[i] = 400 - 20*3;
color[i] = color4;
break;
case 5:
y[i] = 400 - 20*4;
color[i] = color5;
break;
case 6:
y[i] = 400 - 20*5;
color[i] = color6;
break;
case 7:
y[i] = 400 - 20*6;
color[i] = color7;
break;
case 8:
y[i] = 400 - 20*7;
color[i] = color1;
break;
case 9:
y[i] = 400 - 20*8;
color[i] = color2;
}
switch (notes[i][1]) {
case 1: width[i] = 20;
break;
case 2: width[i] = 20 * 2;
break;
case 3: width[i] = 20 * 3;
break;
case 4: width[i] = 20 * 4;
break;
case 5: width[i] = 20 * 5;
break;
case 6: width[i] = 20 * 6;
break;
case 7: width[i] = 20 * 7;
break;
case 8: width[i] = 20 * 8;
}
}
x[0] = 100;
for (int i = 1; i < notes.length; i++){
x[i] = x[i-1] + width[i-1];
}
int timeLast = 0;
//timeLast = total executing time
while(timeLast < 900){
for (int i = 0; i < notes.length; i ++){
x[i]--;
}
this.repaint();
try {Thread.sleep(55);}
catch (InterruptedException e){
e.printStackTrace();
}
timeLast = timeLast + 1;
}
}
public void paint(Graphics g){
super.paint(g);
Graphics2D g2d = (Graphics2D)g;
g2d.setColor(color9);
g2d.setFont(new Font("新細明體", Font.BOLD, 20));
int y1 = 130; //C調 4/4 Y坐標
int y2 = 180; //簡譜行Y坐標
int y3 = 210; //歌詞行Y坐標
int y4 = 163; //加高音點
int y5 = 180; //加八分音符底線
int y6 = 470; //色彩音符說明
int chrPosition = 0;
g2d.drawString("C調 4/4", 16, y1);
//色彩音符說明
g2d.drawString("色彩音符：", 16, y6);
g2d.setColor(color1);
g2d.fillRoundRect(126, y6-16, 20,20, 3,3);
g2d.setColor(color9);
g2d.drawString(": Do", 150, y6);//126 + 24
g2d.setColor(color2);
g2d.fillRoundRect(206, y6-16, 20,20, 3,3);//150 + 56
g2d.setColor(color9);
g2d.drawString(": Re", 230, y6);//206 + 24
g2d.setColor(color3);
g2d.fillRoundRect(286, y6-16, 20,20, 3,3);//230 + 56
g2d.setColor(color9);
g2d.drawString(": Mi", 310, y6);//286 + 24
g2d.setColor(color4);
g2d.fillRoundRect(366, y6-16, 20,20, 3,3);//310 + 56
g2d.setColor(color9);
g2d.drawString(": Fa",390, y6);//366 + 24
g2d.setColor(color5);
g2d.fillRoundRect(446, y6-16, 20,20, 3,3);//390 + 56
g2d.setColor(color9);
g2d.drawString(": So", 470, y6);//446 + 24
g2d.setColor(color6);
g2d.fillRoundRect(526, y6-16, 20,20, 3,3);//470 + 56
g2d.setColor(color9);
g2d.drawString(": La", 550, y6);//526 + 24
//g2d.setColor(color7);
//g2d.fillRoundRect(606, y6-16, 20,20, 3,3);//550 + 56
//g2d.setColor(color9);
//g2d.drawString(":Si", 630, y6);//606 + 24
//寫出簡譜
for (int i = 0;i < simplifiedNote.length; i++){
g2d.drawString(simplifiedNote[i], x[i], y2);
}
//在簡譜下方寫出歌詞
g2d.setColor(color9);
for (int i = 0; i < lyric.length; i++){
if (i != 0 && numNotes[i-1] == 2) {
chrPosition = chrPosition + 1;
g2d.drawString(lyric[i], x[chrPosition], y3);
}
else {
g2d.drawString(lyric[i], x[chrPosition], y3);
}
chrPosition = chrPosition + 1;
}
//在簡譜上方加高音點
g2d.setColor(color9);
g2d.drawString(".", x[1]+14, y4);
g2d.drawString(".", x[11]+2, y4);
g2d.drawString(".", x[17]+11, y4);
g2d.drawString(".", x[23]+2, y4);
g2d.drawString(".", x[29]+2, y4);
g2d.drawString(".", x[47]+2, y4);
g2d.drawString(".", x[49]+2, y4);
g2d.drawString(".", x[50]+2, y4);
//在簡譜下方加八分音符底線
g2d.setColor(color9);
g2d.drawString("_", x[2]+4, y5);
g2d.drawString("_", x[3], y5);
g2d.drawString("_", x[5]+8, y5);
g2d.drawString("_", x[6], y5);
g2d.drawString("_", x[7], y5);//5
g2d.drawString("_", x[8], y5);
g2d.drawString("_", x[10]+8, y5);
g2d.drawString("_", x[11], y5);
g2d.drawString("_", x[12], y5);
g2d.drawString("_", x[13], y5);//10
g2d.drawString("_", x[17]+8, y5);
g2d.drawString("_", x[18], y5);
g2d.drawString("_", x[19], y5);
g2d.drawString("_", x[20], y5);
g2d.drawString("_", x[22]+8, y5);//15
g2d.drawString("_", x[23], y5);
g2d.drawString("_", x[24], y5);
g2d.drawString("_", x[25], y5);
g2d.drawString("_", x[27]+8, y5);
g2d.drawString("_", x[28], y5);//20
g2d.drawString("_", x[30], y5);
g2d.drawString("_", x[31], y5);
g2d.drawString("_", x[33]+8, y5);
g2d.drawString("_", x[34], y5);
g2d.drawString("_", x[35], y5);
g2d.drawString("_", x[36], y5);//25
g2d.drawString("_", x[39], y5);
g2d.drawString("_", x[40], y5);
g2d.drawString("_", x[43], y5);//1
g2d.drawString("_", x[44], y5);//3
g2d.drawString("_", x[46]+8, y5);//6
g2d.drawString("_", x[47], y5);//1
g2d.drawString("_", x[48], y5);//6
g2d.drawString("_", x[49], y5);//1
g2d.drawString("_", x[53], y5);//6
g2d.drawString("_", x[54], y5);//2
g2d.drawString("_", x[55], y5);//3
g2d.drawString("_", x[56], y5);//5
g2d.drawString("_", x[57], y5);//6
//在歌詞下方繪出彩色譜
for (int i = 0;i < notes.length; i++){
g2d.setColor(color[i]);
g2d.fillRoundRect(x[i], y[i], width[i], height, 3,3); //畫圓角方塊
g2d.setColor(color8);
g2d.drawLine(x[i],230, x[i]+width[i], 230);//畫水平上線
g2d.setColor(color8);
g2d.drawLine(x[i],231, x[i], 429);//畫直紅線
g2d.setColor(color8);
g2d.drawLine(x[i],430, x[i]+width[i], 430);//畫水平下線
}
g2d.setColor(color8);
g2d.drawLine(x[notes.length-1]+ width[notes.length - 1],231, x[notes.length - 1] + width[notes.length - 1],429);//畫邊界直紅線
}
}
public class Test7 {
public static void main(String[] args) throws IOException
{
JFrame jf = new JFrame("康樂彩歌");
MyPanel jp = new MyPanel();
//jp.setBackground(Color.lightGray);
jp.setBorder(BorderFactory.createLineBorder(Color.black));
jf.setBounds(0, 0, 1368, 730);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JLabel label1 = new JLabel("選歌："); //創建標簽
label1.setFont(new Font("新細明體", Font.PLAIN, 20));
JComboBox cmbox = new JComboBox(); //創建JComboBox
//cmb.setLocation(500,500);
cmbox.setFont(new Font("新細明體", Font.PLAIN, 20));
//cmb.setBounds(120,80,150,30);
cmbox.addItem("紫竹調");
cmbox.addItem("走一同去郊遊");
cmbox.addItem("大野狼");
cmbox.addItem("歸來吧蘇連多");
cmbox.addItem("追尋");
cmbox.addItem("三輪車");
cmbox.addItem("我家門前有小河");
cmbox.addItem("漁家樂");
cmbox.addItem("嚕啦啦");
cmbox.addItem("踏雪尋梅");
JRadioButton rb2 = new JRadioButton("加人聲", false);
rb2.setFont(new Font("新細明體", Font.PLAIN, 20));
JButton btPlay = new JButton("PLAY");
btPlay.setFont(new Font(Font.DIALOG_INPUT, Font.BOLD, 25));
JButton btStop = new JButton("STOP");
btStop.setFont(new Font(Font.DIALOG_INPUT, Font.BOLD, 25));
JButton btContinue = new JButton("CONTINUE");
btContinue.setFont(new Font(Font.DIALOG_INPUT, Font.BOLD, 25));
jp.add(label1);
jp.add(cmbox);
//jp.add(rb1);
jp.add(rb2);
jp.add(btPlay);
jp.add(btStop);
jp.add(btContinue);
btPlay.addActionListener(new ActionListener() {//给按钮添加事件接收器
@Override
public void actionPerformed(ActionEvent e) {//接受到事件后,进行下面的处理
//System.out.println("Hello World");// 控制台打印输出
//JOptionPane.showMessageDialog(null, "Hello World");// 弹出对话框,显示Hello World
}
});
jf.setVisible(true);
jf.add(jp);
//AudioTest au1 = new AudioTest();
//au1.AudioPlay();
jp.display();
}
}
//Test11.java
import java.io.IOException;
import javax.sound.sampled.*;
class AudioTest {
//This class is used to play a section of 1 minute long music
public void AudioPlay() {
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
try{
Clip clip = AudioSystem.getClip();
AudioInputStream inputStream = AudioSystem.getAudioInputStream(classLoader.getResourceAsStream("audio1.wav"));
clip.open(inputStream);
clip.start();
while (!clip.isRunning())
Thread.sleep(10);
while (clip.isRunning())
Thread.sleep(10);
clip.close();
} catch (Exception e)
{
e.printStackTrace();
System.out.println(e);
}
System.out.println("done"); //to see if the sound is finished playing
}
}
public class Test11 {
public static void main(String[] args) throws IOException
{
AudioTest au1 = new AudioTest();
au1.AudioPlay();
}
}
//Test21.java
import java.io.IOException;
import javax.sound.sampled.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import java.io.*;
import sun.audio.*;
class AudioTest {
//This class is used to play a section of 1 minute long music
public void AudioPlay() {
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
try{
Clip clip = AudioSystem.getClip();
AudioInputStream inputStream = AudioSystem.getAudioInputStream(classLoader.getResourceAsStream("audio1.wav"));
clip.open(inputStream);
clip.start();
while (!clip.isRunning())
Thread.sleep(0);
while (clip.isRunning())
Thread.sleep(0);
clip.close();
} catch (Exception e)
{
e.printStackTrace();
System.out.println(e);
}
System.out.println("done");
}
}
class MyPanel extends JPanel{
int x[] = new int[59];
int y[] = new int[59];
int width[] = new int[59];
int height = 20;
Color color[] = new Color[59];//the color of each note
//一根紫 竹 直 苗 苗, 5 ĺ 65 3 │ 52 32 1 ─
//送給寶寶做管 簫, 6 ĺ 3 5 6 3 │5 ─ ─ ─
//簫兒對準口, ĺ 6 3 6 5 ─
//口兒對準簫, 6 5 3 6 5 ─
//簫 中吹 出 新 時 調, 56 ĺ 65 3 │ 52 32 1 ─
//小寶寶, 小寶 寶, 1 13 2 ─ | 1 13 2 ─
//咿底 咿底學會了.啊～～ 6 ĺ 6 ĺ 2 6 | 5 . 6 23 56│ 5 ─ ─ ─
String[] lyric = {"一", " 根", "紫～", "竹", "直～", "苗～", "苗,", "送", "給", "寶", "寶", "做", "管", "簫,",
"簫", "兒", "對", "準", "口,", "口", "兒", "對", "準", "簫,",
"簫～", "中", "吹～", "出", "新～", "時～ ", "調,",
"小", "寶～", "寶,", "小", "寶～", "寶,",
"咿", "底", "咿", "底", "學 ", "會", "了,", "啊 ～ ～ ～"};//共45個
int[] numNotes = {1, 1, 2, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
2, 1, 2, 1, 2, 2, 1,
1, 2, 1, 1, 2, 1,
1, 1, 1, 1, 1, 1, 1, 6};//共45個
int[][] notes = {{5,2},{8,2},{6,1},{5,1},{3,2},{5,1},{2,1},{3,1},{2,1},{1,4},{6,1},{8,1},
{3,1},{5,1},{6,2},{3,2},{5,8},{8,1},{6,1},{3,1},{6,1},{5,4},{6,1},{8,1},
{3,1},{6,1},{5,4},{5,1},{6,1},{8,2},{6,1},{5,1},{3,2},{5,1},{2,1},{3,1},
{2,1},{1,4},{1,2},{1,1},{3,1},{2,4},{1,2},{1,1},{3,1},{2,4},{6,1},{8,1},
{6,1},{8,1},{9,2},{6,2},{5,3},{6,1},{2,1},{3,1},{5,1},{6,1},{5,8}};//共59個
String[] simplifiedNote = {"| 5", " 1", " 6", "5", "3", "| 5", "2", "3", "2", "1 - ", "| 6", "1",
"3", "5", "6", " 3", " 5 - - -", "| 1", "6", "3", "6", "5 - ", "| 6", "1",
"3", "6", "5 -", "| 5", "6", "1", "6", "5", " 3", "| 5", "2", "3",
"2", "1 -", "| 1", "1", "3", "2 -", "| 1", "1", "3", "2 -", "| 6", "1",
"6", "1", "2", "6", "| 5 .", "6", "2", "3", "5", "6", "| 5 - - - "};//共59個
Color color0 = new Color(255,255,255); //白色
Color color1 = new Color(255,0,0); //紅色
Color color2 = new Color(255,165,0); //橙色
Color color3 = new Color(255,255,0); //黃色
Color color4 = new Color(0,128,0); //綠色
Color color5 = new Color(0,0,255); //藍色
Color color6 = new Color(75,0,130); //靛色
Color color7 = new Color(100,0,153); //紫色
Color color8 = new Color(153,0,0); //暗紅
Color color9 = new Color(0,0,0); //黑色
Color color10 = new Color(37,255,255); //淺藍
public void display(){
for (int i = 0;i < notes.length; i++) {
//System.out.println("notes[" + i + "][0] = " + notes[i][0]);
switch (notes[i][0]) {
case 1:
y[i] = 400;
color[i] = color1;
break;
case 2:
y[i] = 400 - 20;
color[i] = color2;
break;
case 3:
y[i] = 400 - 20*2;
color[i] = color3;
break;
case 4:
y[i] = 400 - 20*3;
color[i] = color4;
break;
case 5:
y[i] = 400 - 20*4;
color[i] = color5;
break;
case 6:
y[i] = 400 - 20*5;
color[i] = color6;
break;
case 7:
y[i] = 400 - 20*6;
color[i] = color7;
break;
case 8:
y[i] = 400 - 20*7;
color[i] = color1;
break;
case 9:
y[i] = 400 - 20*8;
color[i] = color2;
}
switch (notes[i][1]) {
case 1: width[i] = 20;
break;
case 2: width[i] = 20 * 2;
break;
case 3: width[i] = 20 * 3;
break;
case 4: width[i] = 20 * 4;
break;
case 5: width[i] = 20 * 5;
break;
case 6: width[i] = 20 * 6;
break;
case 7: width[i] = 20 * 7;
break;
case 8: width[i] = 20 * 8;
}
}
x[0] = 100;
for (int i = 1; i < notes.length; i++){
x[i] = x[i-1] + width[i-1];
}
int timeLast = 0; //total executing time
while(timeLast < 900){
for (int i = 0; i < notes.length; i ++){
x[i]--;
}
this.repaint();
try {Thread.sleep(10);}
catch (InterruptedException e){
e.printStackTrace();
}
timeLast = timeLast + 1;
}
}
public void paint(Graphics g){
super.paint(g);
Graphics2D g2d = (Graphics2D)g;
g2d.setColor(color9);
g2d.setFont(new Font("新細明體", Font.BOLD, 20));
int y1 = 130; //C調 4/4 Y坐標
int y2 = 180; //簡譜行Y坐標
int y3 = 210; //歌詞行Y坐標
int y4 = 163; //加高音點
int y5 = 180; //加八分音符底線
int y6 = 470; //色彩音符說明
int chrPosition = 0;
g2d.drawString("C調 4/4", 16, y1);
//色彩音符說明
g2d.drawString("色彩音符：", 16, y6);
g2d.setColor(color1);
g2d.fillRoundRect(126, y6-16, 20,20, 3,3);
g2d.setColor(color9);
g2d.drawString(": Do", 150, y6);//126 + 24
g2d.setColor(color2);
g2d.fillRoundRect(206, y6-16, 20,20, 3,3);//150 + 56
g2d.setColor(color9);
g2d.drawString(": Re", 230, y6);//206 + 24
g2d.setColor(color3);
g2d.fillRoundRect(286, y6-16, 20,20, 3,3);//230 + 56
g2d.setColor(color9);
g2d.drawString(": Mi", 310, y6);//286 + 24
g2d.setColor(color4);
g2d.fillRoundRect(366, y6-16, 20,20, 3,3);//310 + 56
g2d.setColor(color9);
g2d.drawString(": Fa",390, y6);//366 + 24
g2d.setColor(color5);
g2d.fillRoundRect(446, y6-16, 20,20, 3,3);//390 + 56
g2d.setColor(color9);
g2d.drawString(": So", 470, y6);//446 + 24
g2d.setColor(color6);
g2d.fillRoundRect(526, y6-16, 20,20, 3,3);//470 + 56
g2d.setColor(color9);
g2d.drawString(": La", 550, y6);//526 + 24
//g2d.setColor(color7);
//g2d.fillRoundRect(606, y6-16, 20,20, 3,3);//550 + 56
//g2d.setColor(color9);
//g2d.drawString(":Si", 630, y6);//606 + 24
//寫出簡譜
for (int i = 0;i < simplifiedNote.length; i++){
g2d.drawString(simplifiedNote[i], x[i], y2);
}
//在簡譜下方寫出歌詞
g2d.setColor(color9);
for (int i = 0; i < lyric.length; i++){
if (i != 0 && numNotes[i-1] == 2) {
chrPosition = chrPosition + 1;
g2d.drawString(lyric[i], x[chrPosition], y3);
}
else {
g2d.drawString(lyric[i], x[chrPosition], y3);
}
chrPosition = chrPosition + 1;
}
//在簡譜上方加高音點
g2d.setColor(color9);
g2d.drawString(".", x[1]+14, y4);
g2d.drawString(".", x[11]+2, y4);
g2d.drawString(".", x[17]+11, y4);
g2d.drawString(".", x[23]+2, y4);
g2d.drawString(".", x[29]+2, y4);
g2d.drawString(".", x[47]+2, y4);
g2d.drawString(".", x[49]+2, y4);
g2d.drawString(".", x[50]+2, y4);
//在簡譜下方加八分音符底線
g2d.setColor(color9);
g2d.drawString("_", x[2]+4, y5);
g2d.drawString("_", x[3], y5);
g2d.drawString("_", x[5]+8, y5);
g2d.drawString("_", x[6], y5);
g2d.drawString("_", x[7], y5);//5
g2d.drawString("_", x[8], y5);
g2d.drawString("_", x[10]+8, y5);
g2d.drawString("_", x[11], y5);
g2d.drawString("_", x[12], y5);
g2d.drawString("_", x[13], y5);//10
g2d.drawString("_", x[17]+8, y5);
g2d.drawString("_", x[18], y5);
g2d.drawString("_", x[19], y5);
g2d.drawString("_", x[20], y5);
g2d.drawString("_", x[22]+8, y5);//15
g2d.drawString("_", x[23], y5);
g2d.drawString("_", x[24], y5);
g2d.drawString("_", x[25], y5);
g2d.drawString("_", x[27]+8, y5);
g2d.drawString("_", x[28], y5);//20
g2d.drawString("_", x[30], y5);
g2d.drawString("_", x[31], y5);
g2d.drawString("_", x[33]+8, y5);
g2d.drawString("_", x[34], y5);
g2d.drawString("_", x[35], y5);
g2d.drawString("_", x[36], y5);//25
g2d.drawString("_", x[39], y5);
g2d.drawString("_", x[40], y5);
g2d.drawString("_", x[43], y5);//1
g2d.drawString("_", x[44], y5);//3
g2d.drawString("_", x[46]+8, y5);//6
g2d.drawString("_", x[47], y5);//1
g2d.drawString("_", x[48], y5);//6
g2d.drawString("_", x[49], y5);//1
g2d.drawString("_", x[53], y5);//6
g2d.drawString("_", x[54], y5);//2
g2d.drawString("_", x[55], y5);//3
g2d.drawString("_", x[56], y5);//5
g2d.drawString("_", x[57], y5);//6
//在歌詞下方繪出彩色譜
for (int i = 0;i < notes.length; i++){
g2d.setColor(color[i]);
g2d.fillRoundRect(x[i], y[i], width[i], height, 3,3); //畫圓角方塊
g2d.setColor(color8);
g2d.drawLine(x[i],230, x[i]+width[i], 230);//畫水平上線
g2d.setColor(color8);
g2d.drawLine(x[i],231, x[i], 429);//畫直紅線
g2d.setColor(color8);
g2d.drawLine(x[i],430, x[i]+width[i], 430);//畫水平下線
}
g2d.setColor(color8);
g2d.drawLine(x[notes.length-1]+ width[notes.length - 1],231, x[notes.length - 1] + width[notes.length - 1],429);//畫邊界直紅線
}
}
public class Test21 implements Runnable {
private Thread t;
private String threadName;
Test21(String name) {
threadName = name;
System.out.println("Creating " + threadName );
}
AudioTest au1 = new AudioTest();
MyPanel panel1 = new MyPanel();
public void run() {
try {
//jp.display();
if (au1!=null) {au1.AudioPlay();}
if (panel1!=null) {panel1.display();}
} finally {}
//System.out.println(threadName + " exiting.");
}
public void start () {
System.out.println("Starting " + threadName );
if (t == null) {
t = new Thread (this, threadName);
t.start ();
}
}
public static void main(String[] args) {
Test21 R1 = new Test21( "Thread-1");
R1.start();
Test21 R2 = new Test21( "Thread-2");
R2.start();
}
}
请帮帮我！我已经试着解决这个问题好几个月了。可能是关于多线程中的逻辑问题。非常感谢！：）
# 1 楼答案
我写了一个答案，说明关于音频和视频的代码工作正常
查看与线程相关的代码（经过一点格式化后），即
我注意到，您在这里编写的大多数代码都没有添加任何逻辑。线程
t和方法start对我来说似乎是多余的。另一件事是接口Runnable充当代码的包装器，可以将代码提供给线程执行。您不需要添加任何关于线程的自定义逻辑。直接用它作为包装所犯的关键错误是，您使用一个
Runnable实现来并行执行两个不同的事情。方法run的实现如下：不幸的是，这是错误的，因为从这个类生成的线程将播放音频，然后依次显示面板。在
main方法中，实际上只需启动两个线程，每个线程都只是播放音频，然后显示面板你需要的是一个播放音频的线程
t1，以及一个显示视频内容的线程t2。两者都是一行语句，可以放在匿名Runnable中。它可能如下所示我希望我能帮忙
看看here或here如何很好地介绍多线程
# 2 楼答案
现在，它的工作原理如下：