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How to get current timestamp in milliseconds since 1970 just the way Java gets
In Java, we can use System.currentTimeMillis() to get the current timestamp in Milliseconds since epoch time which is -
6...
Java - JPA - @Version annotation
...ink bigint instead of an integer should be used in db type to match a long java type.
– Dmitry
Feb 1 '17 at 17:03
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Can a program depend on a library during compilation but not runtime?
...t needed at compile-time is very common. For instance, if you're writing a Java EE 6 application, you compile against the Java EE 6 API, but at runtime, any Java EE container can be used; it's this container that provides the implementation.
Compile-time dependencies can be avoided by using reflect...
Eclipse JPA Project Change Event Handler (waiting)
...I ended up finding out that this seems to be a known bug in DALI (Eclipse Java Persistence Tools) since at least eclipse 3.8 which could cause the save action in the java editor to be extremly slow.
Since this hasn't been fully resolved in Kepler (20130614-0229) yet and because I don't need JPT/DA...
What are “connecting characters” in Java identifiers?
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U+FE4F ﹏ WAVY LOW LINE
U+FF3F ＿ FULLWIDTH LOW LINE
This compiles on Java 7.
int _, ‿, ⁀, ⁔, ︳, ︴, ﹍, ﹎, ﹏, ＿;
An example. In this case tp is the name of a column and the value for a given row.
Column<Double> ︴tp︴ = table.getColumn("tp", double.class);
double...
How do I convert from int to String?
...oesn't know about the two methods above (what else might they not know?).
Java has special support for the + operator when used with strings (see the documentation) which translates the code you posted into:
StringBuilder sb = new StringBuilder();
sb.append("");
sb.append(i);
String strI = sb.toSt...
How to use Java property files?
... have a list of key/value pairs of configuration values I want to store as Java property files, and later load and iterate through.
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Android: android.content.res.Resources$NotFoundException: String resource ID #0x5
... ID #0x7f0700fd
at android.content.res.Resources.getText(Resources.java:299)
at android.content.res.Resources.getString(Resources.java:385)
at com.juvomobileinc.tigousa.ui.signin.SignInFragment$4.onClick(SignInFragment.java:188)
at android.view.View.performClick(View....
Why is there no Constant feature in Java?
I was trying to identify the reason behind constants in Java
I have learned that Java allows us to declare constants by using final keyword.
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Is it OK to use == on enums in Java?
Is it OK to use == on enums in Java, or do I need to use .equals() ? In my testing, == always works, but I'm not sure if I'm guaranteed of that. In particular, there is no .clone() method on an enum, so I don't know if it is possible to get an enum for which .equals() would return a diffe...