reservation vehicules, Java

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

import java.util.*;
import java.lang.*;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.ListIterator;

class Vehicule {
    private int id;
    private String type;
    private String immat;
    
    public Vehicule(int id, String type, String immat) {
        this.id = id;
        this.type = type;
        this.immat = immat;
    }
    public void setType(String type) {
        this.type = type;
    }
    public String getType() {
        return type;
    }
    public String getImmat() {
        return immat;
    }
    public void setImmat(String immat) {
        this.immat = immat;
    }
    public String toString() {
        return "id:" + id + " - Type:" + type + " - Immat:" + immat;
    }
}

class Event {
    private int id;
    private boolean uso;
    private String etat;
    
    public Event(int id, String type) {
        this.id = id;
        this.uso = type.equals("uso");
        if (this.uso)
            etat="en attente";
        if (id==4)
            etat="indispo";
    }
    public void setEtat(String etat) {
        this.etat = etat;
    }
    public String getEtat() {
        return etat;
    }
    public void setId(int id) {
        this.id = id;
    }
    public int getId() {
        return id;
    }
    public void setUso(boolean uso) {
        this.uso = uso;
    }
    public boolean isUso() {
        return uso;
    }
    public String toString() {
        return "id:" + id + " - uso:" + uso + " - etat:" + etat;
    }
}

class Rextester
{  
    public static List<Event> list;
    
    public static void main(String args[])
    {
        Event evt = new Event(5,"uso");
        int id = evt.getId();
        
        list = new ArrayList<Event>();
        for(int i=0;i<5;i++) {
            list.add(new Event(i,(i%2==0) ? "uso" : ""));
    }

for(Event e : list)
            if (e.isUso())
                System.out.println(e.toString());
    }
}

[ + ] Show input
Compilation time: 0.73 sec, absolute running time: 0.15 sec, cpu time: 0.12 sec, memory peak: 18 Mb, absolute service time: 0,89 sec