合并流

package sequenceInputStream.cn;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.SequenceInputStream;

/*
 * 合并流：主要功能是将两个文件的内容合并在一个文件里面
 * 构造方法：
 * SequenceInputStream(InputStream s1, InputStream s2)
 */
public class SequenceInputStreamDemo {
    public static void main(String[] args) throws Exception {
        File f1 = new File("d:"+File.separator+"a.txt");
        File f2 = new File("d:"+File.separator+"b.txt");
        //指定一个合并文件
        File f3 = new File("d:"+File.separator+"ab.txt");
        InputStream s1 = null;
        InputStream s2 = null;
        OutputStream s3 = null;
        try {
             s1 = new FileInputStream(f1);
             s2 = new FileInputStream(f2);
             s3 = new FileOutputStream(f3);
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        SequenceInputStream si = new SequenceInputStream(s1,s2);
        int temp = 0 ;
        try {
            while ((temp = si.read())!=-1) {
             s3.write(temp);            
            }
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
            s1.close();
            s2.close();
            s3.close();
            s1.close();        
    }

}