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What does OSGi solve?
...ng that you get unresolved dependency errors at deployment time instead of NoClassDefFoundErrors at run time. Aside from the module system, the OSGi service layer does deserve mention. It's not as easy to start with because it impacts your architecture (and it's not always appropriate to use it), b...
How to capitalize the first letter of a String in Java?
I am using Java to get a String input from the user. I am trying to make the first letter of this input capitalized.
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Calling clojure from java
Most of the top google hits for "calling clojure from java" are outdated and recommend using clojure.lang.RT to compile the source code. Could you help with a clear explanation of how to call Clojure from Java assuming you have already built a jar from the Clojure project and included it in the cl...
Why is the clone() method protected in java.lang.Object?
What is the specific reason that clone() is defined as protected in java.lang.Object ?
11 Answers
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What to do on TransactionTooLargeException
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this tool is for kotlin :/ any alternative for java?
– maxwellnewage
Jun 25 '19 at 16:09
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What could cause java.lang.reflect.InvocationTargetException?
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From the Javadoc of Method.invoke()
Throws: InvocationTargetException - if the underlying method throws an exception.
This exception is thrown if the method called threw an exception.
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How do I get a class instance of generic type T?
...there is no way to find out the runtime type of generic type parameters in Java. I suggest reading the chapter about type erasure in the Java Tutorial for more details.
A popular solution to this is to pass the Class of the type parameter into the constructor of the generic type, e.g.
class Foo<...
How can I get a java.io.InputStream from a java.lang.String?
I have a String that I want to use as an InputStream . In Java 1.0, you could use java.io.StringBufferInputStream , but that has been @Deprecrated (with good reason--you cannot specify the character set encoding):
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java.lang.UnsupportedClassVersionError: Bad version number in .class file?
...ly have a 1.5 JRE on the system, because Eclipse has its own compiler (not javac), and only needs a 1.5 JRE to compile 1.6 classes.
It may be weird, and a setting needs to be unchecked to allow this, but I just managed to do it.
For the project in question, check the Project Properties (usually Al...
What is the standard exception to throw in Java for not supported/implemented operations?
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java.lang.UnsupportedOperationException
Thrown to indicate that the requested operation is not supported.
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