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Can a constructor in Java be private?
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So...former chief Java architect at Google Joshua Bloch advocates static factory methods that use private constructors (Effective Java 2nd edition)...considering his expertise with the language and his creation of the Java Collections Framewor...
How to create a temporary directory/folder in Java?
...ere a standard and reliable way of creating a temporary directory inside a Java application? There's an entry in Java's issue database , which has a bit of code in the comments, but I wonder if there is a standard solution to be found in one of the usual libraries (Apache Commons etc.) ?
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How do you know a variable type in java?
...String str = "test";
String type = str.getClass().getName();
value: type = java.lang.String
this method :
str.getClass().getSimpleName();
value:String
now example:
Object o = 1;
o.getClass().getSimpleName();
value:Integer
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How can I convert a long to int in Java?
How can I convert a long to int in Java?
15 Answers
15
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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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Android Studio needs JDK 7 for Android-L mac
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Setting the directory to:
/Library/Java/JavaVirtualMachines/jdk1.7.0_60.jdk/Contents/Home
in JDK settings solved my issue. I had the same problem getting started up. Hope this helps!
s...
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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How to avoid null checking in Java?
...e (for example, NullPointerException). Assertions are a highly-underused Java feature that was added in 1.4. The syntax is:
assert <condition>
or
assert <condition> : <object>
where <condition> is a boolean expression and <object> is an object whose toString() ...
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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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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