This sucks.

javaTypesComparison.java

import java.util.Arrays;

public class HelloWorld {

    public static void main(String[] args) {
        byte abyte = (byte) 3;
        if (Math.random() < 1) abyte++;// No static opt
        Object a = abyte;
        Object b = (Object) (byte) 4;
        Object c = (Object) 4;
        System.out.println(a == b);// T
        System.out.println(a.equals(b));// T
        System.out.println(c == b);// F, types matter
        System.out.println(c.equals(b));// F
        String dString = "fuck";
        if (Math.random() < 1) dString += "you";
        Object d = dString;
        Object e = "fuckyou";
        System.out.println(d == e);// F, by ref
        System.out.println(d.equals(e));// T, by val
        Object f = new int[]{1, 2};
        int[] gA = new int[]{2, 2};
        if (Math.random() < 1) gA[0] = 1;
        Object g = gA;
        System.out.println(f == g);// F, by ref
        System.out.println(f.equals(g));// F, not overrided
        System.out.println(Arrays.equals((int[]) f, (int[]) g));// T, must cast as its non-virtual
    }
}