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How to import a .cer certificate into a java keystore?
During the development of a Java webservice client I ran into a problem. Authentication for the webservice is using a client certificate, a username and a password. The client certificate I received from the company behind the webservice is in .cer format. When I inspect the file using a text edit...
Convert an array of primitive longs into a List of Longs
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I found it convenient to do using apache commons lang ArrayUtils (JavaDoc, Maven dependency)
import org.apache.commons.lang3.ArrayUtils;
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long[] input = someAPI.getSomeLongs();
Long[] inputBoxed = ArrayUtils.toObject(input);
List<Long> inputAsList = Arrays.asList(inputBoxed);
it...
Remove last character of a StringBuilder?
...nd(serverId);
}
Alternatively, use the Joiner class from Guava :)
As of Java 8, StringJoiner is part of the standard JRE.
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How to remove all null elements from a ArrayList or String Array?
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Try:
tourists.removeAll(Collections.singleton(null));
Read the Java API. The code will throw java.lang.UnsupportedOperationException for immutable lists (such as created with Arrays.asList); see this answer for more details.
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How to compare two Dates without the time portion?
I would like to have a compareTo method that ignores the time portion of a java.util.Date. I guess there are a number of ways to solve this. What's the simplest way?
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How to check sbt version?
...Set current project to jacek (in build file:/Users/jacek/)
[info] Setting: java.lang.String = 0.13.1
[info] Description:
[info] Provides the version of sbt. This setting should be not be modified.
[info] Provided by:
[info] */*:sbtVersion
[info] Defined at:
[info] (sbt.Defaults) Defaults.scala:6...
Typing Enter/Return key using Python and Selenium?
...um.Keys
WebElement.sendKeys(Keys.RETURN);
the import statement is for Java, for other languages it is maybe a different, for example python: from selenium.webdriver.common.keys import Keys
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Generate fixed length Strings filled with whitespaces
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Since Java 1.5 we can use the method java.lang.String.format(String, Object...) and use printf like format.
The format string "%1$15s" do the job. Where 1$ indicates the argument index, s indicates that the argument is a String an...
How do I time a method's execution in Java?
...y, its "new-fashioned" because you used nanoTime, which wasn't added until java5
– John Gardner
Oct 7 '08 at 22:26
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Best way to encode text data for XML in Java?
Very similar to this question , except for Java.
21 Answers
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