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How to find the duration of difference between two dates in java?
...s 24 hours in length. See the correct answers that use either Joda-Time or java.time libraries.
– Basil Bourque
Jun 5 '14 at 18:24
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Java String array: is there a size of method?
...MsoF The documentation for "[]" (array, not Arrays object) is actually the Java specification. .e.g docs.oracle.com/javase/specs/jls/se7/html/jls-10.html Edit: Ah... the comment is from 2013...
– Acapulco
Jun 15 '15 at 22:42
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Maven Run Project
Is there a Maven "phase" or "goal" to simply execute the main method of a Java class? I have a project that I'd like to test manually by simply doing something like "mvn run".
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Android Studio Project Structure (v.s. Eclipse Project Structure)
...tudio GUI, only a few folders are shown. The important part is that your R.java is found here under build/source/<flavor>/r/<build type(optional)>/<package>/R.java
2. libs
This is the standard libs folder that you see in eclipse land too
3. src
Here, you only see the java and r...
How to get milliseconds from LocalDateTime in Java 8
...poch) using the new LocalDate , LocalTime or LocalDateTime classes of Java 8.
9 Answers
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Integrating the ZXing library directly into my Android application
...ctory you just extracted
Right-click project folder -> Properties -> Java Build Path -> Library -> Add External JARs...
Navigate to the newly extracted folder and open the core directory and select core.jar ... hit enter!
Now you just have to correct a few errors in the translations an...
Why are interface variables static and final by default?
Why are interface variables static and final by default in Java?
15 Answers
15
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Java synchronized method lock on object, or method?
... can't do this.
I would suggest you to use AtomicInteger instead:
import java.util.concurrent.atomic.AtomicInteger;
class X {
AtomicInteger a;
AtomicInteger b;
public void addA(){
a.incrementAndGet();
}
public void addB(){
b.incrementAndGet();
}
}
...
How do I change Eclipse to use spaces instead of tabs?
...
Java Editor
Click Window » Preferences
Expand Java » Code Style
Click Formatter
Click the Edit button
Click the Indentation tab
Under General Settings, set Tab policy to: Spaces only
Click OK ad nauseam to apply the chang...
Java integer to byte array
...
using Java NIO's ByteBuffer is very simple:
byte[] bytes = ByteBuffer.allocate(4).putInt(1695609641).array();
for (byte b : bytes) {
System.out.format("0x%x ", b);
}
output:
0x65 0x10 0xf3 0x29
...