package word;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.io.InputStream;

import java.io.PrintStream;

public class Bb {

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

        // TODO 自动生成的方法存根

        String path1="C:";

        String name="\\JAVA";

        String end=".txt";

        String path2;

        long l;

        long n=2;//设置分割数目

        File file = new File(path1+name+end);

        File file2;

        l=file.length();

        InputStream in = null;

        PrintStream out = null;

        try {

            in = new FileInputStream(file);

            int tempbyte;

            int i=0;

            for(i=1;i<=n;i++) {

                path2=path1+name+i+end;

                file2=new File(path2);

                if(file2.exists()) {}

                else {

                    file2.createNewFile();

                }

                out=new PrintStream(file2);

            while ((tempbyte =  in.read()) != -1) {

            out.print((char)tempbyte);

            System.out.write(tempbyte);

            if(file2.length()>l/n)break;//子文件到达指定大小就创建下一个文件；

            }

            }

            out.close();

            in.close();

        } catch (IOException e) {

            e.printStackTrace();

            return;

        }

   }}
   

package word;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.io.InputStream;

import java.io.PrintStream;

public class Bb {

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

        // TODO 自动生成的方法存根

        String path1="C:";

        String name="\\JAVA";

        String end=".txt";

        String path2;

        long n=2;

        File file = new File(path1+name+end);

        File file2;

        l=file.length();

        InputStream in = null;

        PrintStream out = null;

                if(file.exists()) {}

        else {

        file.createNewFile();

                }

                out=new PrintStream(file);

            try {

            int tempbyte;

            int i=0;

            for(i=1;i<=n;i++) {

                path2=path1+name+i+end;

                                file2=new File(path2);

                                in = new FileInputStream(file2);

            while ((tempbyte =  in.read()) != -1) {

            out.print((char)tempbyte);

            }

            }

            out.close();

            in.close();

        } catch (IOException e) {

            e.printStackTrace();

            return;

        }

   }}