Put multiple classes in the same file

In my project I have the class main and created new Java class files with NetBeans to define the objects there.

I can only use one of the classes with main , others can not even call the methods.

Is it anyway? Can I only use% s of% class main ? What if I need more classes?

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package iniciativa13ªera;

/**
 *
 * @author Giovane
 */
public class Iniciativa13ªEra {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        Jogador giovane = new Jogador();
        giovane.setNomeJogador("Giovane - Ekth");
        giovane.setModDestreza(3);
        giovane.setModTamanho(0);

        giovane.calcular();
    }   

}

This is my main, and below the first class I did

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package iniciativa13ªera;

/**
 *
 * @author Giovane
 */
public class Jogador {
    //Atributos
    String nomeJogador;
    int modTamanho;
    int modDestreza;

    //------------- Métodos Personalizados

    //Muda o nome do Objeto (jogador)
    public void nome (String nome){
        this.setNomeJogador(nome);
    }

    //Muda o tamanho do Objeto (jogador)
    public void tamanho(int valor){
        this.setModTamanho(valor);
    }

    //Muda a destreza do Objeto (jogador)
    public void destreza(int valor){
        this.setModDestreza(valor);
    }

    //--------------- Métodos Especiais
    public String getNomeJogador() {
        return nomeJogador;
    }

    public void setNomeJogador(String nomeJogador) {
        this.nomeJogador = nomeJogador;
    }

    public int getModTamanho() {
        return modTamanho;
    }

    public void setModTamanho(int modTamanho) {
        this.modTamanho = modTamanho;
    }

    public int getModDestreza() {
        return modDestreza;
    }

    public void setModDestreza(int modDestreza) {
        this.modDestreza = modDestreza;
    }

    //---------------- Métodos Construtor
    public Jogador() {
        this.setModTamanho(0);
        this.setModDestreza(0);
    }

And for example, if I try to pull from a second, which I have made there, in another .java , does not work, like that .java that is defined in a third class