How to prevent new Fragment from being recreated again and again?

Hello i made a simple program in android in which i used 3 Tabs in Tablayout. When I click on the first tab, it opens the first fragment, but when I go to the second tab, when I go back to the first tab, select "recreate" and overwrite my new fragment ...how to stop it?

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

    TabLayout tabLayout = (TabLayout) findViewById(R.id.tablayout);
    tabLayout.addTab(tabLayout.newTab().setText("One"), true);
    tabLayout.addTab(tabLayout.newTab().setText("Two"), false);

    tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {                                                      
            @Override
        public void onTabSelected(TabLayout.Tab tab) {
            if (tab.getPosition() == 0) {
                Fragment fragment = new Fragment1();

                chageFragment(fragment);
            } 

        }

        @Override
        public void onTabUnselected(TabLayout.Tab tab) {

        }

        @Override
        public void onTabReselected(TabLayout.Tab tab) {

        }
    });

  }

private void chageFragment(Fragment fragment) {
     getFragmentManager().beginTransaction().add(R.id.container,    fragment,fragment.getClass().getSimpleName()).commit();
}