file.java

里面有我的JAVA实验和一些教程

import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.StringTokenizer;
public class file
{
	public static void main(String[] args)
	{
		int i;
		byte buf[]=new byte[1000];		
		try
		{
			FileOutputStream fos=new FileOutputStream("fcs.txt");
			String result[]=new String[9];
			System.out.println("请输入三名职工的信息:");
			for(i=1;i<4;i++)
			{
				System.out.println("职工"+i+"姓名:");
				int rd=System.in.read(buf);				
				fos.write(buf,0,rd);
				System.out.println("基本工资:");
				rd=System.in.read(buf);				
				fos.write(buf,0,rd);
				System.out.println("奖金:");	
				rd=System.in.read(buf);
				fos.write(buf,0,rd);
			}
			FileInputStream fis=new FileInputStream("fcs.txt");
			int rd=fis.read(buf,0,1000);
			String str=new String(buf,0,rd);
			StringTokenizer st=new StringTokenizer(str);			
			for(i=0;i<9;i++)
				{
				result[i]=st.nextToken();
				System.out.print(" "+result[i]);				
				}
			System.out.println();
			for(i=1;i<9;i=i+3)
			{
				double temp;
				temp=Double.parseDouble(result[i]);
				temp=temp*(1+0.1);
				temp=(float)temp;
				result[i]=Double.toString(temp);
				System.out.print(" "+result[i]);
			}
			fis.close();
			FileWriter fw=new FileWriter("fcs.txt");
			for(i=0;i<9;i++)
			{				
				fw.write(result[i],0,result[i].length());
				fw.flush();
			}
		}
		catch(IOException E)
		{
			System.out.println("Output Error!");			
		}
	}
}