Hannes Pries - Web/Shopware/JavaScript-Developer Blog
Weil es immer eine simple Lösung gibt!

package de.hannespries.commons.io;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

public class RecursiveFileSeeker {
public static List<File> list(File folder, List<File> result, boolean allowFolders) {
return list(folder, result, allowFolders, new ArrayList<>());
}

public static List<File> list(File folder, List<File> result, boolean allowFolders, List<String> excludeDirnames) {
try {
if (!folder.isDirectory()) {
return result;
}

File[] files = folder.listFiles();
if (files != null) {
for (File file : files) {
if (file.isDirectory() && !excludeDirnames.contains(file.getName())) {
if (allowFolders) {
result.add(file);
}
if(!excludeDirnames.contains(file.getName())){
result = list(file, result, allowFolders, excludeDirnames);
}
} else {
result.add(file);
}
}
}
} catch (Exception e) {
e.printStackTrace();
}

return result;
}
}

package de.hannespries.commons.cli;

import java.util.HashMap;

public class ArgumentResolver {

private HashMap<String, String> arguments = new HashMap<>();

public ArgumentResolver() {

}

public ArgumentResolver(String[] args) {
this.readArray(args);
}

/**
* converts an argument array with '-' as argument seperator in a easy
* readable structure
*
* @param args the argument array from e.g. the main-method
*/
public void addArray(String[] args){
this.readArray(args, false);
}

/**
* converts an argument array with '-' as argument seperator in a easy
* readable structure
*
* @param args the argument array from e.g. the main-method
*/
public void readArray(String[] args) {
this.readArray(args, true);
}

/**
* converts an argument array with '-' as argument seperator in a easy
* readable structure
*
* @param args the argument array from e.g. the main-method
* @param clearBefore clear the existing map
*/
public void readArray(String[] args, boolean clearBefore) {
if(clearBefore){
this.arguments.clear();
}

if (args != null && args.length > 0) {
String argName = "";
for (String arg : args) {
if (arg.startsWith("-")) {
argName = arg.substring(1, arg.length()).trim();
this.arguments.put(argName, "");
} else {
if (argName.trim().length() > 0) {
if (this.arguments.get(argName).trim().length() == 0) {
this.arguments.put(argName, this.arguments.get(argName).concat(arg));
} else {
this.arguments.put(argName, this.arguments.get(argName).concat(" " + arg));
}
}
}
}
}
}

/**
*
* @param name argument name
* @return gives back the existence of the argument with the given name
*/
public boolean existsIn(String name) {
return this.arguments.containsKey(name);
}


/**
*
* @param name argument name
* @param defaultValue argument value if not found
* @return value of the argument with the given name
*/
public String getArgumentValue(String name, String defaultValue) {
return this.existsIn(name) ? this.arguments.get(name).trim() : defaultValue;
}

/**
*
* @param name argument name
* @return value of the argument with the given name
*/
public String getArgumentValue(String name) {
return this.getArgumentValue(name, "");
}

/**
*
* @return count of arguments
*/
public int size() {
return this.arguments.size();
}
}

java -jar example.jar -name blubb blubb -value 1