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Java Runtime.getRuntime(): getting output from executing a command line program
I'm using the runtime to run command prompt commands from my Java program. However, I'm not aware of how I can get the output the command returns.
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How to map calculated properties with JPA and Hibernate
My Java bean has a childCount property. This property is not mapped to a database column . Instead, it should be calculated by the database with a COUNT() function operating on the join of my Java bean and its children. It would be even better if this property could be calculated on demand / "laz...
Best way to compare dates in Android
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FYI, the troublesome old date-time classes such as java.util.Date, java.util.Calendar, and java.text.SimpleDateFormat are now legacy, supplanted by the java.time classes. Most of the java.time functionality is back-ported to Java 6 & Java 7 in the ThreeTen-Backport projec...
Get only part of an Array in Java?
I have an array of Integers in Java, I would like use only a part of it. I know in Python you can do something like this array[index:] and it returns the array from the index. Is something like this possible in Java.
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Convert array of strings into a string in Java
I want the Java code for converting an array of strings into an string.
13 Answers
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How to do a SOAP Web Service call from Java class?
...nd your problem boils down to how to call a SOAP (JAX-WS) web service from Java and get its returning object. In that case, you have two possible approaches:
Generate the Java classes through wsimport and use them; or
Create a SOAP client that:
Serializes the service's parameters to XML;
Calls t...
Why is there no multiple inheritance in Java, but implementing multiple interfaces is allowed?
Java doesn't allow multiple inheritance, but it allows implementing multiple interfaces. Why?
18 Answers
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Why do Java programmers like to name a variable “clazz”? [closed]
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clazz has been used in Java in place of the reserved word "class" since JDK 1.0. "class" is what you want, but abbreviating or inserting junk ("a", "the", "_", etc) reduces clarity. clazz just says class. "International" English speakers (those rea...
Why is the String class declared final in Java?
From when I learned that the class java.lang.String is declared as final in Java, I was wondering why that is. I didn't find any answer back then, but this post: How to create a replica of String class in Java? reminded me of my query.
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What does “The APR based Apache Tomcat Native library was not found” mean?
...allows optimal performance in production environments was not found on the java.library.path"
The library referred to is bundled into an OS specific dll (tcnative-1.dll) loaded via JNI. It allows tomcat to use OS functionalities not provided in the Java Runtime (such as sendfile, epoll, OpenSSL, sy...