【サイト内の Java 関連の資料】
import java.io.BufferedInputStream; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; public class Main { private static String IN_FILE_NAME = "1.png"; public static void main(String[] args) { InputStream in = null; try { in = new BufferedInputStream(new FileInputStream( IN_FILE_NAME ) ); int b; int bytes = 0; // 1バイト単位で読み込み while ((b = in.read()) != -1) { // %2e は2桁の16進数 if ( ( bytes % 16 ) == 0 ) System.out.printf( "%1$8x : ", bytes ); System.out.printf("%1$2x ", b); if ( ( bytes % 16 ) == 15 ) System.out.println( " " ); bytes++; } System.out.println( "\n " + bytes + " bytes" ); } catch (FileNotFoundException e) { System.out.println( "File Not Found" ); } catch (IOException e) { System.out.println( "I/O Exception" ); } finally { try { if (in != null) { in.close(); } } catch (Exception e) { } } } }
【Windows での実行】
Windows で,ファイル Main.java を編集し実行するために,次のコマンドを, コマンドプロンプトで実行する.
cd %LOCALAPPDATA% notepad Main.java javac -encoding UTF-8 Main.java curl -O https://www.kkaneko.jp/sample/face/1.png java Main