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Downcasting in Java
Upcasting is allowed in Java, however downcasting gives a compile error.
11 Answers
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How to parse/format dates with LocalDateTime? (Java 8)
Java 8 added a new java.time API for working with dates and times ( JSR 310 ).
7 Answers
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How can I make a multipart/form-data POST request using Java?
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These are the Maven dependencies I have.
Java Code:
HttpClient httpclient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
FileBody uploadFilePart = new FileBody(uploadFile);
MultipartEntity reqEntity = new MultipartEntity();
reqEntity.addPart("up...
When is an interface with a default method initialized?
While searching through the Java Language Specification to answer this question , I learned that
4 Answers
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How should I copy Strings in Java?
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Set time to 00:00:00
I have a problem resetting hours in Java. For a given date I want to set the hours to 00:00:00.
12 Answers
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Force Java timezone as GMT/UTC
... single instance of a running JVM, set the user.timezone system property:
java -Duser.timezone=GMT ... <main-class>
If you need to set specific time zones when retrieving Date/Time/Timestamp objects from a database ResultSet, use the second form of the getXXX methods that takes a Calendar o...
Convert Long into Integer
How to convert a Long value into an Integer value in Java?
14 Answers
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JPQL IN clause: Java-Arrays (or Lists, Sets…)?
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Is it possible to run JavaFX applications on iOS, Android or Windows Phone 8?
Can one develop an entire application using JavaFX and run it on iOS, Android or Windows Phone 8, without writing platform-specific code?
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