2018-05-08 IO InputStream

read()第1の方法・・・swift

  public class FileInputStreamDemo {
public static void main(String[] args) throws IOException{
    
    FileInputStream fis=new FileInputStream("E:\\java\\a.txt");
    byte[] b=new byte[1024];
    int len=0;
    while((len=fis.read(b))!=-1) {
    System.out.print(new String(b,0,len)); 
    
    }fis.close();
        }}

   

    public class FileInputStreamDemo {
    public static void main(String[] args) throws IOException{
        
        FileInputStream fis=new FileInputStream("E:\\java\\a.txt");
        
        int len=0;
    while((len=fis.read())!=-1) {
        System.out.print((char)len);
    }
    /*  ：     。  read()           
    while(fis.read()!=-1) {
        System.out.print((char)fis.read());
    }
    */
        fis.close();
    }}

![       .JPG](https://upload-images.jianshu.io/upload_images/3820013-0a4bf783bb5e3568.JPG?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

read()     
···swift