jb14.0 tests, Java

jb14.0 tests

//'main' method must be in a class 'Rextester'.
//Compiler version 1.8.0_111

import java.util.*;
import java.util.function.IntPredicate;
import java.lang.*;
import java.math.*;

class Rextester
{  
    public static void main(String args[])
    {
        System.out.println("Hello, World!");
        
        MyTest t = n -> n >= 10? (n<=20? true: false) : false;
        
        System.out.println(t.testing(5));
        System.out.println(t.testing(10));
        System.out.println(t.testing(15));
        System.out.println(t.testing(20));
        System.out.println(t.testing(25));
        System.out.println("---");
        NumericFunc factorial = n -> {
            int result = 1;
            for(int i = n; i>1; i--)
                result *= i;
           return result;
        };
        
        System.out.println(factorial.func(1));
        System.out.println(factorial.func(2));
        System.out.println(factorial.func(3));
        System.out.println(factorial.func(4));
        System.out.println(factorial.func(5));
        System.out.println("---");
        
        NumericFuncT<Double> factorialT = n -> {
            Double result = 1.0;
            for(int i = n.intValue(); i>1; i--)
                result *= i;
           return result;
        };
        
        System.out.println(factorialT.func(6.0));
        System.out.println("---");
        
        MyIntFubric mif = MyIntNum::new;
        
        MyIntNum min = mif.create(10);
        IntPredicate ip = min::hasCommonFactor;
        
        System.out.println(ip.test(4));
        System.out.println(ip.test(3));
        System.out.println(ip.test(5));
        System.out.println(ip.test(8));
        System.out.println("---");
        
    }
}
interface MyIntFubric{
    MyIntNum create(int n);
}

class MyIntNum{
    int _n;
    MyIntNum(int n){
        _n = n;
    }
    
    public boolean hasCommonFactor(int m){
        boolean result = false;
        for(int i=2; i<=(Math.min(_n, m))/2; i++){
            if((_n%i == 0) && (m%i == 0)){
                result = true;
                break;
            }
        }
        
        return result;
    }
        
}

interface MyTest{
    boolean testing(int n);
}

interface NumericFunc{
    int func(int n);
}

interface NumericFuncT<T>{
    T func(T n);
}


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