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Run class in Jar file
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Use java -cp myjar.jar com.mypackage.myClass.
If the class is not in a package then simply java -cp myjar.jar myClass.
If you are not within the directory where myJar.jar is located, then you can do:
On Unix or Linux platfor...
Java dynamic array sizes?
...;
If you find yourself in this situation, I'd highly recommend using the Java Collections instead. In particular ArrayList essentially wraps an array and takes care of the logic for growing the array as required:
List<XClass> myclass = new ArrayList<XClass>();
myclass.add(new XClass()...
ERROR:'keytool' is not recognized as an internal or external command, operable program or batch file
...e.
For example, on my Windows 7 machine, it is in
C:\Program Files (x86)\Java\jre6\bin, and my %PATH% variable looks like C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\Program Files (x86)\Java\jre6\bin;C:\WINDOWS\System32\WindowsPowerShell\v1.0\ (and many other entries)
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In Clojure 1.3, How to read and write a file
...eally big file.
Number 2: how to read a file line by line.
(use 'clojure.java.io)
(with-open [rdr (reader "/tmp/test.txt")]
(doseq [line (line-seq rdr)]
(println line)))
The with-open macro takes care that the reader is closed at the end of the body. The reader function coerces a string (i...
Creating a “logical exclusive or” operator in Java
Java has a logical AND operator.
Java has a logical OR operator.
Java has a logical NOT operator.
17 Answers
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Python vs Cpython
...plementations of the Python programming language; these are implemented in Java, C# and RPython (a subset of Python), respectively. Jython compiles your Python code to Java bytecode, so your Python code can run on the JVM. IronPython lets you run Python on the Microsoft CLR. And PyPy, being implemen...
Java Date cut off time information
I have a Java Date object containing date and time information. I want to write a method that cuts off the time information, truncates the hours-minutes-seconds, so I only have the date left.
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Java Equivalent of C# async/await?
I am a normal C# developer but occasionally I develop application in Java. I'm wondering if there is any Java equivalent of C# async/await?
In simple words what is the java equivalent of:
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How do I iterate through the files in a directory in Java?
...rectories. What is the standard way to accomplish directory iteration with Java?
9 Answers
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java: run a function after a specific number of seconds
... function that I want to be executed after 5 seconds.
How can i do that in Java?
10 Answers
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