save few objects to realm

MainActivity.java

package com.ruwanka.realmdbinspect;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;

import com.ruwanka.realmdbinspect.model.Address;
import com.ruwanka.realmdbinspect.model.Person;

import io.realm.Realm;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Address address = new Address("Galle Rd", "Ambalangoda", "Sri Lanka");
        final Person person = new Person(1, "Ruwanka", "De Silva", address);

        Realm realm = Realm.getDefaultInstance();

        realm.executeTransaction(new Realm.Transaction() {
            @Override
            public void execute(Realm realm) {
                realm.copyToRealmOrUpdate(person);
            }
        });
    }
}