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print file byte array to hex
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import org.apache.commons.io.FileUtils; | |
import java.io.File; | |
public class MainClass { | |
private final static char[] hexArray = "0123456789ABCDEF".toCharArray(); | |
public static void main(String[] args) { | |
File fileDirectory = new File("files"); | |
for (File file : fileDirectory.listFiles()) { | |
try { | |
byte[] byteArray = new byte[(int) file.length()]; | |
byteArray = FileUtils.readFileToByteArray(file); | |
System.out.println(bytesToHex(byteArray)); | |
} catch (Exception e) { | |
e.printStackTrace(); | |
} | |
} | |
} | |
// method from : https://stackoverflow.com/a/9855338/5138078 | |
public static String bytesToHex(byte[] bytes) { | |
char[] hexChars = new char[bytes.length * 2]; | |
for (int j = 0; j < bytes.length; j++) { | |
int v = bytes[j] & 0xFF; | |
hexChars[j * 2] = hexArray[v >>> 4]; | |
hexChars[j * 2 + 1] = hexArray[v & 0x0F]; | |
} | |
return new String(hexChars); | |
} | |
} |
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<?xml version="1.0" encoding="UTF-8"?> | |
<project xmlns="http://maven.apache.org/POM/4.0.0" | |
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" | |
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> | |
<modelVersion>4.0.0</modelVersion> | |
<groupId>chooco13.io</groupId> | |
<artifactId>byte-based-extension-finder</artifactId> | |
<version>1.0-SNAPSHOT</version> | |
<dependencies> | |
<!-- https://mvnrepository.com/artifact/com.google.code.gson/gson --> | |
<dependency> | |
<groupId>com.google.code.gson</groupId> | |
<artifactId>gson</artifactId> | |
<version>2.8.5</version> | |
</dependency> | |
<!-- https://mvnrepository.com/artifact/org.projectlombok/lombok --> | |
<dependency> | |
<groupId>org.projectlombok</groupId> | |
<artifactId>lombok</artifactId> | |
<version>1.16.22</version> | |
<scope>provided</scope> | |
</dependency> | |
<!-- https://mvnrepository.com/artifact/commons-io/commons-io --> | |
<dependency> | |
<groupId>commons-io</groupId> | |
<artifactId>commons-io</artifactId> | |
<version>2.6</version> | |
</dependency> | |
</dependencies> | |
<build> | |
<plugins> | |
<plugin> | |
<groupId>org.apache.maven.plugins</groupId> | |
<artifactId>maven-compiler-plugin</artifactId> | |
<configuration> | |
<source>1.8</source> | |
<target>1.8</target> | |
</configuration> | |
</plugin> | |
</plugins> | |
</build> | |
</project> |
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