CRUD exemplo

CadAnime.java

package cadanime;

import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

/**
 * @author aluno
 */
public class CadAnime 
{
    public static void main(String[] args) throws SQLException 
    {
        //MostrarAnimes();        
        //NovoAnime("Tokyo Ghoul:re");
        
        if (AtualizaAnime(2, "Steins;Gate 0")) System.out.println("Atualizado");
        else System.out.println("Nao atualizado");
    }
    
    static void MostrarAnimes() throws SQLException
    {
        ResultSet rs = FonteDados.getConn().prepareStatement("SELECT animes.* FROM animes").executeQuery();                
        
        if (rs.isBeforeFirst())
            while (rs.next())
                System.out.print("Anime: " + rs.getString("nome") + "\n\n");
    }
    
    static void NovoAnime(String nome) throws SQLException 
    {
        PreparedStatement ps = FonteDados.getConn().prepareStatement("INSERT INTO animes (nome) values (?)");
        ps.setString(1, nome);
        ps.execute();
    }
    
    static boolean DeletaAnime(int id) throws SQLException
    {
        return FonteDados.getConn().prepareStatement("DELETE FROM animes WHERE id = " + id).executeUpdate() > 0;
    }    
    
    static boolean AtualizaAnime(int id, String novoNome) throws SQLException 
    {
        PreparedStatement ps = FonteDados.getConn().prepareStatement("UPDATE animes SET nome = ? WHERE id = ?");
        ps.setString(1, novoNome);
        ps.setInt(2, id);
        return ps.executeUpdate() > 0;
    }
}

FonteDados.java

/*
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package cadanime;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

/**
 * @author aluno
 */
public class FonteDados 
{
    public static Connection getConn()
    {
        try 
        {
            return DriverManager.getConnection("jdbc:mysql://localhost/anime","root", "");
        }
        catch(SQLException ex)
        {
            System.err.println("Error: [" + ex.getMessage() + "]");
        }
        
        return null;
    }
}