Java Sample: Concatenation of two file's content into another

import java.io.*;
class jConcatFiles
{
    public static void main(String args[])
    {
        try
        {        
            FileInputStream file1=null;
            FileInputStream file2=null;
            SequenceInputStream file3=null;
            file1=new FileInputStream("City.txt");
            file2=new FileInputStream("Output.txt");
            file3=new SequenceInputStream(file1,file2);
            BufferedInputStream inBuffer=new BufferedInputStream(file3);
            BufferedOutputStream outBuffer=new BufferedOutputStream(System.out);
            int ch;
            while((ch=inBuffer.read())!=-1)
            {
                outBuffer.write((char)ch);
            }
       }catch(Exception e){}
        
    }
}