MAin.java

package reflection;

import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class MAin {


    public static void main(String[] args) {


        DemoGis objeto = new DemoGis();
        objeto.setNombre("Carlos");
        objeto.setEdad(12);
        objeto.setSaldo(12.2);
        List<String> lst = new ArrayList<>();
        lst.add("apodo 1");
        lst.add("apodo 2");
        lst.add("apodo 3");
        objeto.setApodos(lst);

        List<Log> logInformation = getLogInformation(DemoGis.class, objeto);
        logInformation.stream().forEach(x -> System.out.println(x));

        System.out.println("*******************************************************************************************");
        System.out.println("Despues del cambio ");
        System.out.println("*******************************************************************************************");

        // update DemoGis
        objeto.setNombre("Carlos Daniel Larico Flores");
        List<Log> logInformationafter = getLogInformation(DemoGis.class, objeto);
        logInformationafter.stream().forEach(x -> System.out.println(x));

    }

    public static List<Log> getLogInformation(Class c, Object objeto){

        List<Log> result = new ArrayList<>();
        Method[] declaredMethods = c.getDeclaredMethods();

        Arrays.stream(declaredMethods).forEach(
                x -> {
                    try {
                        if(x.getName().startsWith("get")){
                            Object obj = x.invoke(objeto, null);
                            Log l = new Log();
                            l.setAttributo(x.getName());
                            l.setTipoData(obj.getClass().getName());
                            l.setValor(obj);
                            result.add(l);
                        }
                    } catch (IllegalAccessException e) {
                        e.printStackTrace();
                    } catch (InvocationTargetException e) {
                        e.printStackTrace();
                    }
                }
        );
        return result;
    }

    public static class Log {
        private String attributo;
        private String tipoData;
        private Object valor;

        @Override
        public String toString() {
            return "Log{" +
                    "attributo='" + attributo + '\'' +
                    ", tipoData='" + tipoData + '\'' +
                    ", valor='" + valor + '\'' +
                    '}';
        }

        public String getAttributo() {
            return attributo;
        }

        public void setAttributo(String attributo) {
            this.attributo = attributo;
        }

        public String getTipoData() {
            return tipoData;
        }

        public void setTipoData(String tipoData) {
            this.tipoData = tipoData;
        }

        public Object getValor() {
            return valor;
        }

        public void setValor(Object valor) {
            this.valor = valor;
        }
    }

}


package reflection;

import java.util.List;

public class DemoGis {

   private String nombre;
   private int edad;
   private Double saldo;
   private List<String> apodos;

    public DemoGis() {
    }

    public DemoGis(String nombre, int edad, Double saldo, List<String> apodos) {
        this.nombre = nombre;
        this.edad = edad;
        this.saldo = saldo;
        this.apodos = apodos;
    }

    public String getNombre() {
        return nombre;
    }

    public void setNombre(String nombre) {
        this.nombre = nombre;
    }

    public int getEdad() {
        return edad;
    }

    public void setEdad(int edad) {
        this.edad = edad;
    }

    public Double getSaldo() {
        return saldo;
    }

    public void setSaldo(Double saldo) {
        this.saldo = saldo;
    }

    public List<String> getApodos() {
        return apodos;
    }

    public void setApodos(List<String> apodos) {
        this.apodos = apodos;
    }
}