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Shallow copy of a Map in Java
...uple of ways (maybe others as well) to create a shallow copy of a Map in Java:
3 Answers
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How to give Jenkins more heap space when it´s started as a service under Windows?
...estion is : if the builds is running out of memory , why we should set the java options in the master ?
– yarin
Jan 24 '18 at 8:26
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Java's L number (long) specification
It appears that when you type in a number in Java, the compiler automatically reads it as an integer, which is why when you type in (long) 6000000000 (not in integer's range) it will complain that 6000000000 is not an integer. To correct this, I had to specify 6000000000L . I just learned abo...
Naming convention for utility classes in Java
When writing utility classes in Java, what are some good guidelines to follow?
5 Answers
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JUnit 4 Test Suites
...rent ways:
right-click and run in Eclipse as Junit test
create a runable Java Application; Main class='org.junit.runner.JUnitCore' and Args='my.package.tests.AllTests'
run from the command line:
$ java -cp build/classes/:/usr/share/java/junit4.jar:/usr/share/java/hamcrest-core.jar org.junit.runne...
What does “Could not find or load main class” mean?
A common problem that new Java developers experience is that their programs fail to run with the error message: Could not find or load main class ...
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Declaring and initializing variables within Java switches
I have a crazy question about Java switches.
6 Answers
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Is there a common Java utility to break a list into batches?
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Check out Lists.partition(java.util.List, int) from Google Guava:
Returns consecutive sublists of a list, each of the same size (the final list may be smaller). For example, partitioning a list containing [a, b, c, d, e] with a partition size of 3...
What is the default initialization of an array in Java?
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Everything in a Java program not explicitly set to something by the programmer, is initialized to a zero value.
For references (anything that holds an object) that is null.
For int/short/byte/long that is a 0.
For float/double that is a ...
Splitting a Java String by the pipe symbol using split(“|”)
The Java official documentation states:
7 Answers
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