プログラムでBMPファイルを変更する

Question

bmpファイルを読み込み（Javaで）、Javaプログラムの構文内で画像データを操作したい。これどうやってするの？私はちょうどそのように画像をロードしようとしました：

public static void main(String[] args) { 
      System.out.println("START"); 
      loadbitmap lbm = new loadbitmap(); 
      lbm.loadBMPFile(); 
      System.out.println("END"); 
     } 

     private void loadBMPFile() 
     { 
      { 
       try{ 

        FileInputStream fstream = new FileInputStream("sample_fingerprint_grayscale.bmp"); 
        DataInputStream in = new DataInputStream(fstream); 
        BufferedReader br = new BufferedReader(new InputStreamReader(in)); 
        String inputString; 
        while ((inputString = br.readLine()) != null) { 

         readBMPFile.add(inputString); 
        } 
        in.close(); 
       } 
       catch (Exception e){ 
        System.out.println("IN ERROR"); 
        System.err.println("Error: " + e.getMessage()); 
       } 
       System.out.println("IN loadBMPFile"); 
       System.out.println("BMP size is " + readBMPFile.size()); 
       System.out.println(readBMPFile.get(2)); 
      } 
     } 
} 

しかし、私はデータを検査するとき、実際にはそこにありません。私はこれのノブですので、正しい方向の任意の点が高く評価されます。ここで

が出力されます。

START 
IN loadBMPFile 
BM¸U 

(At this point there is a large amount of gibberish characters that won't paste into Stack Overflow) 

END 

私は私がArrayListのに彼らに文字を持参し、そこからそれらを操作することができ期待していた、HEX形式にこれらの文字をフォーマット進リーダー（Frhed）を持っています。ここで

は、六角リーダー出力です：

BM<bh:b8>U<bh:01><bh:00><bh:00><bh:00><bh:00><bh:00>6<bh:04><bh:00><bh:00>(<bh:00><bh:00><bh:00><bh:f0><bh:00><bh:00><bh:00><bh:98><bh:fe><bh:ff><bh:ff><bh:01><bh:00><bh:08><bh:00><bh:00><bh:00><bh:00><bh:00><bh:82>Q<bh:01><bh:00><bh:12><bh:0b><bh:00><bh:00><bh:12><bh:0b><bh:00><bh:00><bh:00><bh:00><bh:00><bh:00><bh:00><bh:00><bh:00><bh:00><bh:00><bh:00><bh:00><bh:00><bh:01><bh:01><bh:01><bh:00><bh:02><bh:02><bh:02><bh:00><bh:03><bh:03><bh:03><bh:00><bh:04><bh:04><bh:04><bh:00><bh:05><bh:05><bh:05><bh:00><bh:06><bh:06><bh:06><bh:00><bh:07><bh:07><bh:07><bh:00><bh:08><bh:08><bh:08><bh:00><bh:09><bh:09><bh:09><bh:00> 


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

Answer 1

使用javax.imageio.ImageIO。

BufferedImage img = ImageIO.read(new File("... .bmp")); 

BufferedImageも変更される可能性があります。変更するには非常に適しています。