DavidTPate

private void deinitialize() {
     stopPreview();
     releaseCamera();
     Log.d(TAG, "Camera Initialization has Been Undone");
 }

 private void initialize() {
     if (hasCamera(this) && getCameraInstance() != null) {
         startPreview();
         Log.d(TAG, "Camera Initialization has Been Completed");

DavidTPate

<resources>

    <style name="SampleBase" parent="@android:style/Theme.Light" />

    <style name="SampleTheme" parent="SampleBase">
        <item name="android:windowBackground">@null</item>
        <item name="menuDrawerStyle">@style/MenuDrawerStyle</item>
    </style>

    <style name="SampleTheme.RightDrawer" parent="SampleBase">

DavidTPate

public class Car {
    int year;
    String make;
    String model;
    String carType;

    public Car(int year) {
        this.year = year;
    }

DavidTPate

public class Car {
    int year;
    String make;
    String model;
    String carType;

    public static class Builder {
        int year;
        String make;
        String model;

DavidTPate

Car carSearchCriteria = new Car(1998, null, "Focus", "Sedan");

DavidTPate

// Using the Telescoping Constructor anti-pattern
Car carSearchCriteria = new Car(1998, null, "Focus", "Sedan");

// Using the Builder Pattern
Car carSearchCriteria = new Car.Builder().year(1998)
                                         .model("Focus")
                                         .carType("Sedan")
                                         .build();

DavidTPate

public class LazySingleton {
    private static LazySingleton instance = null;

    private LazySingleton() { }

    public static synchronized LazySingleton getInstance() {
        if (instance == null) {
            instance = new LazySingleton();
        }
        return instance;

DavidTPate

public class EagerSingleton {
    private static final EagerSingleton instance = new EagerSingleton();

    private EagerSingleton() { }

    public static EagerSingleton getInstance() {
        return instance;
    }
}

DavidTPate

public class EagerStaticSingleton {
    private static EagerStaticSingleton instance = null;

    private EagerStaticSingleton() { }

    static {
        try {
            instance = new EagerStaticSingleton();
        } catch (Exception e) {
            // Do something

DavidTPate

public class OnDemandSingleton {
    private OnDemandSingleton() { }

    private static class OnDemandSingletonHolder {
        public static final OnDemandSingleton instance = new OnDemandSingleton();
    }

    public static OnDemandSingleton getInstance() {
        return OnDemandSingletonHolder.instance;
    }