Size and signedness of Java ints and longs, Java

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//Title of this code
//'main' method must be in a class 'Rextester'.

import java.util.*;
import java.lang.*;

class Rextester
{  
    public static void main(String args[])
    {
        int zero = 0;
        int one = 1;
        int minusone = -1;
        int effeff = 0xffffffff;
        //int effeffell = 0xffffffffL;
        // Gives:
        // source_file.java:15: possible loss of precision
        // found   : long
        // required: int
        //         int effeffell = 0xffffffffL;
        //                         ^
        long longeffeffell = 0xffffffffL;
        
        System.out.println("zero = " + zero);
        System.out.println("one = " + one);
        System.out.println("minusone = " + minusone);
        System.out.println("effeff = " + effeff);
        //System.out.println("effeffell = " + effeffell);
        System.out.println("longeffeffell = " + longeffeffell);

System.out.println("effeff < 0 = " + (effeff < 0));
        System.out.println("effeff < zero = " + (effeff < zero));

//System.out.println("effeffell < 0 = " + (effeffell < 0));
        //System.out.println("effeffell < zero = " + (effeffell < zero));

System.out.println("longeffeffell < 0 = " + (longeffeffell < 0));
        System.out.println("longeffeffell < zero = " + (longeffeffell < zero));
    }
}

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Compilation time: 0.54 sec, absolute running time: 0.24 sec, cpu time: 0.06 sec, memory peak: 10 Mb, absolute service time: 0.94 sec