package com.csdn.collection;
import java.awt.im.InputContext;
import java.awt.image.BufferedImageFilter;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.nio.Buffer;
import java.util.Scanner;
public class SteamFlow {
public static void main(String[] args) {
File file=new File("src/min.txt");
//if(file.exists()) System.out.println("the file is exist");
file.mkdirs();//没有该文件夹 就创建一个;
try {
FileInputStream input=new FileInputStream(file);
// System.out.println(input.read()+" "+input.read());
byte[] b=new byte[10000];
System.out.println(input.read(b));
System.out.println(new String(b));
input.close();
} catch ( Exception e) {
e.printStackTrace();
System.out.println("文件不存在");
}
try {
FileOutputStream out =new FileOutputStream(file,true);//加个ture 就不覆盖写入了
out.write("我真的很爱你,郭福敏!".getBytes());
FileReader filer=new FileReader(file);
BufferedReader buffer=new BufferedReader(filer);
System.out.println(buffer.readLine()+buffer.read()+buffer.readLine());
//没有返回值的时候 read() return -1 and readLine() return null;
} catch (Exception e) {
e.printStackTrace();
}
}
}
import java.awt.im.InputContext;
import java.awt.image.BufferedImageFilter;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.nio.Buffer;
import java.util.Scanner;
public class SteamFlow {
public static void main(String[] args) {
File file=new File("src/min.txt");
//if(file.exists()) System.out.println("the file is exist");
file.mkdirs();//没有该文件夹 就创建一个;
try {
FileInputStream input=new FileInputStream(file);
// System.out.println(input.read()+" "+input.read());
byte[] b=new byte[10000];
System.out.println(input.read(b));
System.out.println(new String(b));
input.close();
} catch ( Exception e) {
e.printStackTrace();
System.out.println("文件不存在");
}
try {
FileOutputStream out =new FileOutputStream(file,true);//加个ture 就不覆盖写入了
out.write("我真的很爱你,郭福敏!".getBytes());
FileReader filer=new FileReader(file);
BufferedReader buffer=new BufferedReader(filer);
System.out.println(buffer.readLine()+buffer.read()+buffer.readLine());
//没有返回值的时候 read() return -1 and readLine() return null;
} catch (Exception e) {
e.printStackTrace();
}
}
}