Curry

CMain.java

package xyz.elliptic_shiho.Curry;

public class CMain {
	public static void main(String...args) {
		Curry.curry(CMain.class, "foo", new Class[]{double.class, int.class}, 1, 20).invoke(null, 1.5);
	}
	public int add(int a, int b) {
		return a + b;
	}
	public static void foo(double A, int b) {
		System.out.println(A + b);
	}
}

Curry.java

package xyz.elliptic_shiho.Curry;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.Deque;
import java.util.LinkedList;

public class Curry {
	public static Invokable curry(Class<?> par1Class, String par2Method, Class<?>[] par3ParamTypes, int par4ParamOrd, Object par5param) {
		try {
			if(par3ParamTypes.length <= par4ParamOrd) {
				throw new RuntimeException("Error: par3ParamType.length <= par4ParamOrd");
			}
			final Method m = par1Class.getMethod(par2Method, par3ParamTypes);
			return new Invokable() {
				@Override
				public Object invoke(Object instance, Object... objects) {
					Object[] arg = new Object[par3ParamTypes.length];
					Deque<Object> queue = new LinkedList<>(Arrays.asList(objects));
					for(int i = 0; i < arg.length; i++) {
						if(i == par4ParamOrd) {
							arg[i] = par5param;
						} else {
							arg[i] = queue.pop();
						}
					}
					try {
						return m.invoke(instance, arg);
					} catch (IllegalAccessException | IllegalArgumentException
							| InvocationTargetException e) {
						throw new RuntimeException(e);
					}
				}
			};
		} catch (NoSuchMethodException | SecurityException e) {
			throw new RuntimeException(e);
		}

	}
}

Invokable.java

package xyz.elliptic_shiho.Curry;

public interface Invokable {
	public Object invoke(Object instance, Object... objects);
}