小晒一下，一个残缺初级版音乐切割和组合软件

//////////////////////////////////////////////切割

package 文件的切割与和;

import java.awt.*;
import java.awt.event.*;
import java.io.*;

public class Test3 implements ActionListener{
 Frame frame;
 TextField t1,t2;
 Button btn1,btn2;
 String string,string1;
 Panel p1,p2,p3,p4;
 Label l1,l2;
 public Test3() {
  frame = new Frame("把你割成粉碎");
  t1 = new TextField(30);
  t2 = new TextField(30);
  p1 = new Panel();
  p2 = new Panel();
  p3 = new Panel();
  p4 = new Panel();
        l1 = new Label("文件读取路径名：");
        l2 = new Label("切割到：");
  btn1 = new Button("切割吧");
  btn2 = new Button("合体");
  btn1.addActionListener(this);
  btn2.addActionListener(this);
  frame.add(p2,"Center");
  p2.add(p3,"North");
  p3.add(l1);
  p3.add(t1);
  p2.add(p4,"South");
  p4.add(l2);
  p4.add(t2);
  frame.add(p1,"South");
  p1.add(btn1,"West");
  p1.add(btn2,"East");
  frame.setSize(600,200);
  frame.setLocation(200,200);
  frame.setVisible(true);
  frame.addWindowListener(new WindowAdapter(){
   public void windowClosing(WindowEvent e) {
    System.exit(0);
   }
  });
 }
 public void test3() {
  try {
   string = t1.getText();
   string1 = t2.getText();
   FileInputStream fis = new FileInputStream(string);
   FileOutputStream fos = null;
   byte[] buf = new byte[1024 * 1024];
   int len = 0;
   int count = 1;
   while ((len = fis.read(buf)) != -1) {
    fos = new FileOutputStream(string1 + (count++) + ".part");
    fos.write(buf, 0, len);
    fos.close();
   }
   fis.close();
  } catch (Exception e) {
   // TODO: handle exception
  }
 }
 public static void main(String[] args) {
  new Test3();
 }
 public void actionPerformed(ActionEvent e) {
  if(e.getSource() == btn1){
    test3();
    }else if(e.getSource()==btn2){
    new Test1();
    frame.setVisible(false);
    }
 }
}

////////////////////////////////////////////////////组合

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;

public class Test1 implements ActionListener {

 Frame frame;
 TextField t1,t2,t3;
 Button btn2;
 String string,string1;
 Panel p1,p2,p3;
    Label l1,l2,l3;
    int i;
 public Test1() {
  frame = new Frame("超级赛亚人");
  t1 = new TextField(20);
  t2 = new TextField(20);
  t3 = new TextField(5);
  p1 = new Panel();
  p2 = new Panel();
  p3 = new Panel();
  btn2 = new Button("合体吧");
  btn2.addActionListener(this);
  l1 = new Label("文件来源：");
  l2 = new Label("存入路径和名称（MP3格式）：");
  l3 = new Label("文件数：");
  frame.add(p1,"Center");
  p1.add(p2,"North");
  p1.add(p3,"South");
  p2.add(l1);
  p2.add(t1);
  p2.add(l3);
  p2.add(t3);
  p3.add(l2);
  p3.add(t2);
  frame.add(btn2, "South");
  frame.setSize(600, 200);
  frame.setLocation(200, 200);
  frame.setVisible(true);
  frame.addWindowListener(new WindowAdapter() {
   public void windowClosing(WindowEvent e) {
    System.exit(0);
   }
  });
 }
 public void test1() {
  try {
   string = t1.getText();
   string1 = t2.getText();
   i = Integer.parseInt(t3.getText());
   
   ArrayList<FileInputStream> al = new ArrayList<FileInputStream>();
   for (int x = 1; x < i+1; x++)
   al.add(new FileInputStream(string+x+".part"));
   final Iterator<FileInputStream> it = al.iterator();
   Enumeration<FileInputStream> en = new Enumeration<FileInputStream>() {
    public boolean hasMoreElements() {
     return it.hasNext();
    }
    public FileInputStream nextElement() {
     return it.next();
    }
   };
   SequenceInputStream sis = new SequenceInputStream(en);
   FileOutputStream fos = new FileOutputStream(string1);
   byte[] buf = new byte[1024 * 4];
   int len = 0;
   while ((len = sis.read(buf)) != -1) {
    fos.write(buf, 0, len);
   }
   fos.close();
   sis.close();
  } catch (Exception e) {
   // TODO: handle exception
  }
 }
 public static void main(String[] args) {
  new Test1();

 }

 @Override
 public void actionPerformed(ActionEvent e) {
  if(e.getSource() == btn2){
    test1();
    }

 }
}