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import java.io.*;
import java.util.Scanner;
public class IO流 {
public static void main(String[] args) {
写入文本();
读取文本();
写入二进制(读取二进制());
}public static void 写入文本(){
try(OutputStreamWriter osw = new OutputStreamWriter(new FileOutputStream("输出.txt"),"utf-8")){
try(PrintWriter writer = new PrintWriter(osw)){
osw.write("你好");
osw.write("很高兴");
}
}catch (Exception e){
e.printStackTrace();
}
}public static void 读取文本(){
try(InputStreamReader isr = new InputStreamReader(new FileInputStream("输出.txt"),"utf-8")){
try(Scanner scanner = new Scanner(isr)){
System.out.println(scanner.next());
}
}catch (Exception e){
e.printStackTrace();
}
}public static byte[] 读取二进制(){
byte[] buffer = new byte[3810220];
try (InputStream is = new FileInputStream("图片.png")){is.read(buffer);
}catch (Exception e){
e.printStackTrace();
}finally {
return buffer;
}
}public static void 写入二进制(byte[] bytes){
try(OutputStream os = new FileOutputStream("新的图片.png");
OutputStream os2 = new FileOutputStream("新的图片2.jpg")){
os.write(bytes);
os2.write(bytes);
}catch (Exception e){}
}}
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