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SHA-1 fingerprint of keystore certificate
... is not found, Go to your installed JDK Directory e.g. <YourJDKPath>\Java\jdk1.8.0_231\bin\, open command line and try the above commands for debug/release mode.
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“webxml attribute is required” error in Maven
...gt;
This solution works for me(I was using 2.2 before). Also, I am using Java Based Configuration for Servlet 3.0 and no need to have web.xml file.
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What is the purpose of class methods?
...m teaching myself Python and my most recent lesson was that Python is not Java , and so I've just spent a while turning all my Class methods into functions.
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Tomcat: How to find out running tomcat version
...is not recent, I thought, my answer can still help others:
cd tomcat/lib
java -cp catalina.jar org.apache.catalina.util.ServerInfo
and that's it.
Server version: Apache Tomcat/7.0.30
Server built: May 23 2013 02:54:10
Server number: 7.0.30.0
OS Name: Linux
OS Version: 3.13.0-36-ge...
Ignoring SSL certificate in Apache HttpClient 4.3
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Tried to apply this on WebSphere and got "java.security.KeyStoreException: IBMTrustManager: Problem accessing trust store java.io.IOException: Invalid keystore format " To avoid you need pass KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType()); inst...
Multiple inheritance for an anonymous class
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Anonymous classes must extend or implement something, like any other Java class, even if it's just java.lang.Object.
For example:
Runnable r = new Runnable() {
public void run() { ... }
};
Here, r is an object of an anonymous class which implements Runnable.
An anonymous class can exte...
How to develop and test an app that sends emails (without filling someone's mailbox with test data)?
...t work but papercut.codeplex.com did. The mails were being generated using JavaMail.
– Ashutosh Jindal
Oct 24 '12 at 8:35
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What is the right way to POST multipart/form-data using curl?
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I had a hard time sending a multipart HTTP PUT request with curl to a Java backend. I simply tried
curl -X PUT URL \
--header 'Content-Type: multipart/form-data; boundary=---------BOUNDARY' \
--data-binary @file
and the content of the file was
-----------BOUNDARY
Content-Disposition: for...
Why use a ReentrantLock if one can use synchronized(this)?
...aspect that's gonna become more relevant in the near future has to do with Java 15 and Project Loom. In the (new) world of virtual threads, the underlying scheduler would be able to work much better with ReentrantLock than it's able to do with synchronized, that's true at least in the initial Java 1...
Class Not Found Exception when running JUnit test
...to Properties -> Builders and then move Maven Project Builder above the Java Builder and it worked for me.
– xorcus
Mar 29 '16 at 21:43
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