assignment 3, Java

assignment 3

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

import java.util.*;
import java.lang.*;
import java.util.Scanner;
import java.lang.Math;

import java.util.ArrayList;

class Rextester
{  
    public static void main(String args[])
    {
        System.out.println("Hello, World!");
    }
}

class Boxcar
{
    
    
    private int numUnits = 0;
    private String cargo = "";
    private boolean repair = false;
    private String tempstr = "";
    
    public Boxcar()
    {
        this("gizmos", 5, false);
    }
    
    public Boxcar(String c, int u, boolean r)
    {
        tempstr = c.toLowerCase();
        if ( (tempstr).equals("gizmos") || 
        (tempstr).equals("gadgets") ||
        (tempstr).equals("widgets") ||
        (tempstr).equals("wadgets") )
        cargo = tempstr;
        else
        {
        cargo = "gizmos";
        }
        
        if ( (u >= 0) && (u <= 10) )
        numUnits = u;
        else
        {
        numUnits = 0;
        }
        
        if ( r == true )
        {
        repair = r;
        numUnits = 0;
        }
        else
        {
        repair = r;
        }
    }
    
    public void loadCargo()
    {
        if (repair == false)
        {
        if (numUnits < 10)
        numUnits++;
        }
        else
        numUnits = 0;
    }
    
    public String getCargo()
    {
        
        return (cargo);
        
    }
    
    public void setCargo(String c)
    {
        tempstr = c.toLowerCase();
        if ( (tempstr).equals("gizmos") || 
        (tempstr).equals("gadgets") ||
        (tempstr).equals("widgets") ||
        (tempstr).equals("wadgets") )
        cargo = tempstr;
        else
        {
        cargo = "gizmos";
        }
    }
    
    public boolean isFull()
    {
        
        if (numUnits == 10)
        {
            return true;
        }
        else
        {
            return false;
        }
        
    }
    
    public String lazy()
    {
        if (repair == true)
        return ("in repair");
        else
        return ("in service");
    }
    
    public void callForRepair()
    {
        repair = true;
        numUnits = 0;
    }
    
    public String toString()
    {
        
        
       return (numUnits + " " + cargo + "\t" + lazy());
        
    }
    
    
}


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