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How to install Maven 3 on Ubuntu 18.04/17.04/16.10/16.04 LTS/15.10/15.04/14.10/14.04 LTS/13.10/13.04
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java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
I'm using the support library for my app. In my FragmentActivity I'm using an AsyncTask for downloading data from internet. In the onPreExecute() method I add a Fragment and in the onPostExecute() method I remove it again. When the orientation is changed in between, I get the above mentioned excepti...
How can I check if a single character appears in a string?
In Java is there a way to check the condition:
17 Answers
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How set the android:gravity to TextView from Java side in Android
I can use android:gravity="bottom|center_horizontal" in xml on a textview to get my desired results, but I need to do this programmatically. My textview is inside a tablerow if that matters in a relativelayout .
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prototype based vs. class based inheritance
In JavaScript, every object is at the same time an instance and a class. To do inheritance, you can use any object instance as a prototype.
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java.net.ConnectException: localhost/127.0.0.1:8080 - Connection refused
I am using xampp apache server to serve resources to the application from my machine. But i am getting the above error.
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Gradle proxy configuration
... work for me. I had to set the options (-Dhttp.proxyHost and the likes) as JAVA_OPTS environment variable in order to make it work.
– GoldenD
Sep 14 '18 at 3:01
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ArithmeticException: “Non-terminating decimal expansion; no exact representable decimal result”
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From the Java 11 BigDecimal docs:
When a MathContext object is supplied with a precision setting of 0 (for example, MathContext.UNLIMITED), arithmetic operations are exact, as are the arithmetic methods which take no MathContext obje...
Android SDK Manager Not Installing Components
...wed by an empty package list. The SDK, it seems, was trying to use legacy Java installation. Setting the JAVA_HOME to the 1.6 jdk did the trick.
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Scanner vs. StringTokenizer vs. String.Split
I just learned about Java's Scanner class and now I'm wondering how it compares/competes with the StringTokenizer and String.Split. I know that the StringTokenizer and String.Split only work on Strings, so why would I want to use the Scanner for a String? Is Scanner just intended to be one-stop-shop...