歌词滚动代码java

如何在java程序中加上滚动条,为什么我的程序滚动条没显示?

请使用JScroolPane.比如要为一个多行文本域加上滚动条,要使用如下代码：

其中jf代表窗口.

java解析lrc文件代码

lrc可以通过如下util工具类进行转换,如果想知道结果是否读取的有问题,可以直接用记事本打开lrc文件的,之后和输出结果比对一下就行.

package com.routon.utils;

import java.io.BufferedReader;

import java.io.FileInputStream;

import java.io.IOException;

import java.io.InputStreamReader;

import java.util.ArrayList;

import java.util.List;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import android.util.Log;

/**

* parse lrc file tool

* eg：

* utilLrc lrc = new utilLrc("/sdcard/test.lrc");

* get song name : String title = lrc.getTitle();

* get performer name : String artist = lrc.getArtist();

* get album name: String album = lrc.getAlbum();

* get lrcmaker name: String lrcMaker = lrc.getLrcMaker();

* get song list: ListStatement list = lrc.getLrcList();

*

* @author xuweilin

*/

public class utilLrc {

private static String TAG = "utilLrc";

public class Statement {

private double time = 0.0;//time, 0.01s

private String lyric = "";//song word

/*

* get time

public double getTime() {

return time;

}

* set time

public void setTime(double time) {

this.time = time;

* set time.format:mm:ss.ms

public void setTime(String time) {

String str[] = time.split(":|\\.");

* get lrc word

public String getLyric() {

return lyric;

* set lrc word

public void setLyric(String lyric) {

this.lyric = lyric;

private BufferedReader bufferReader = null;

private String title = "";

private String artist = "";

private String album = "";

private String lrcMaker = "";

private ListStatement statements = new ArrayListStatement();

* fileName

public utilLrc(String fileName) throws IOException{

FileInputStream file = new FileInputStream(fileName);

readData();

* read the file

private void readData() throws IOException{

statements.clear();

String strLine;

while(null != (strLine = bufferReader.readLine()))

{

if("".equals(strLine.trim()))

continue;

if(null == title || "".equals(title.trim()))

Pattern pattern = Pattern.compile("\\[ti:(.+?)\\]");

Matcher matcher = pattern.matcher(strLine);

if(matcher.find())

title=matcher.group(1);

if(null == artist || "".equals(artist.trim()))

Pattern pattern = Pattern.compile("\\[ar:(.+?)\\]");

artist=matcher.group(1);

if(null == album || "".equals(album.trim()))

Pattern pattern = Pattern.compile("\\[al:(.+?)\\]");

album=matcher.group(1);

if(null == lrcMaker || "".equals(lrcMaker.trim()))

Pattern pattern = Pattern.compile("\\[by:(.+?)\\]");

lrcMaker=matcher.group(1);

int timeNum=0;

String str[] = strLine.split("\\]");

for(int i=0; istr.length; ++i)

if(isTime(str[i])){

++timeNum;

for(int i=0; itimeNum;++i)

Statement sm = new Statement();

sm.setTime(str[i]);

if(timeNumstr.length)

sm.setLyric(str[str.length-1]);

statements.add(sm);

sortLyric();

* judge the string is or not date format.

private boolean isTime(String string)

String str[] = string.split(":|\\.");

return false;

try{

for(int i=0;istr.length;++i)

Integer.parseInt(str[i]);

catch(NumberFormatException e)

Log.e(TAG, "isTime exception："+e.getMessage());

return true;

* sort the word by time.

private void sortLyric()

for(int i=0;istatements.size()-1;++i)

int index=i;

double delta=Double.MAX_VALUE;

boolean moveFlag = false;

for(int j=i+1;jstatements.size();++j)

double sub;

if(0=(sub=statements.get(i).getTime()-statements.get(j).getTime()))

moveFlag=true;

if(subdelta)

delta=sub;

index=j+1;

if(moveFlag)

statements.add(index, statements.get(i));

statements.remove(i);

--i;

* get title

* @return

public String getTitle(){

return title;

* get artist

public String getArtist(){

return artist;

* get album

public String getAlbum(){

return album;

* get lrc maker

public String getLrcMaker(){

return lrcMaker;

* get song list

public ListStatement getLrcList(){

return statements;

如何在java中实现 歌词同步显示

如果你打开歌词文件查看的话,前面都会有时间.我想歌词同步也是靠的这个时间吧

求教,急用！JAVA按歌词文件的时间标签从小到大排列内容,然后最好能给我做个方法,让我直接调用,排

土嘎嘎的粉丝们大家好,这是你要的方法,直接输入路径调用就可以了,输出结果是sorted-加原文件名

*?根据路径和编码?重新排列歌词中的文件,转换后的文件是"sorted-原文件"

public?static?void?sortLyric(String?source)?{

try?{

ListString?lines?=?new?ArrayListString();

String?line;

while?((line?=?br.readLine())?!=?null)?{

lines.add(line);

br.close();

Collections.sort(lines);

for?(String?everyLine?:?lines)?{

bw.write(everyLine);

bw.newLine();

bw.flush();

bw.close();

}?catch?(Exception?e)?{

e.printStackTrace();

java实现文字循环上下滚动并逐渐放大或缩小

是用java Applet 么?

我试着写了个,估计代码不是很简, 你看看是不是这种效果：坐标自己可以去调整下,名字从上到下移动,从上到中间的时候变大,过了中间逐渐变小,过了底部显示下一个名字,循环显示,题意应该没理解错吧

import java.applet.*;

import java.awt.*;

public class ShowName extends Applet

String names[]=new String[]{"luojian","qianhongcheng","fenglingxin","luoxiaojian","wangyin"};

int index =0;

int size1 =size;

int name1Y =0+offsetY;

int name1Index =index;

public void init()

setVisible(true);

public void paint(Graphics g)

try

checkName("name1Index",name1Y);

String name1 =names[name1Index];

name1Y=checkY(name1Y);

size1=checkSize(name1Y,size1);

Font font1 = new Font(null,Font.PLAIN,size1);

g.setFont(font1);

g.drawString(name1, 100, name1Y);

catch(Exception e)

repaint();

public int checkSize(int p,int psize)

psize =psize+10;

psize =psize-10;

return psize;

public int checkY(int p)

else

return p;

public void checkName(String nameindex,int p)

if(nameindex.equals("name1Index"))

name1Index++;

name1Index =index;

滚动的小球 java源代码

;

import javax.swing.*;

import java.awt.geom.*;

class RollingBall extends JPanel {

public void paintComponent( Graphics g ) {

super.paintComponent( g );

// Draw the ball

// Draw the rotating ellipse by skewing the Device Space

double angdeg =??// One rotation per ball's travelling over its perimeter

public void roll( ) throws Exception {

while( true ) {

repaint( );

public static void main( String[ ] args ) throws Exception {

JFrame f = new JFrame( );

RollingBall rb = new RollingBall( );

f.getContentPane( ).add( rb );

f.setVisible( true );

rb.roll( );

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