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Is it a good idea to use Google Guava library for Android development?
...mment, so I post an answer.) Personally I use whole Guava library in every Java project and when I don't have significant and properly profiled performance problems. If you do have, for example, memory concerns like in Android environment, you can use ProGuard to get only these parts of Guava you re...
Byte[] to InputStream or OutputStream
...a blob column in my database table, for which I have to use byte[] in my Java program as a mapping and to use this data I have to convert it to InputStream or OutputStream . But I don't know what happens internally when I do so. Can anyone briefly explain me what's happening when I do this conv...
Reusing a PreparedStatement multiple times
...ill still be reduced.
To address the situation that you want to re-use the Java-side PreparedStatement, some JDBC drivers (such as Oracle) have a caching feature: If you create a PreparedStatement for the same SQL on the same connection, it will give you the same (cached) instance.
About multi-threa...
How to find serial number of Android device?
...ovider.Settings.Secure;
import android.telephony.TelephonyManager;
import java.io.UnsupportedEncodingException;
import java.util.UUID;
public class DeviceUuidFactory {
protected static final String PREFS_FILE = "device_id.xml";
protected static final String PREFS_DEVICE_ID = "device_id";
...
What's the difference between ISO 8601 and RFC 3339 Date Formats?
...mandates it tools.ietf.org/html/rfc3339#page-12
– Java Guy
Nov 1 '12 at 2:26
22
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Difference between API and ABI
... +1 for pointing out their mutual exclusiveness. For example, Java's introduction of the assert keyword is an API-incompatible yet ABI-compatible change docs.oracle.com/javase/7/docs/technotes/guides/language/… .
– Pacerier
Aug 27 '14 at 4:24
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How to optimize imports automatically after each save in IntelliJ IDEA
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@miss_R For Java, it's under Settings | Editor | Code Style | Java | Imports tab | Import Layout section in IntelliJ 2016.3.4. I presume other languages have it in their respective settings. :)
– Christian
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How to get the number of Characters in a String?
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@ThomasKappler: but if you look at it that way, then e.g. Java's String's .length() method does not return the number of characters either. Neither does Cocoa's NSString's -length method. Those simply return the number of UTF-16 entities. But the true number of codepoints is rarely ...
Problems with Android Fragment back stack
...tting crash on this line fragmentManager.popBackStackImmediate();error: java.lang.IllegalStateException: FragmentManager is already executing transactions at com.example.myapplication.FragmentA$2.onBackStackChanged(FragmentA.java:43)
– Priyanka
May ...
Start service in Android
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Java code for start service:
Start service from Activity:
startService(new Intent(MyActivity.this, MyService.class));
Start service from Fragment:
getActivity().startService(new Intent(getActivity(), MyService.class));
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