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What is an efficient way to implement a singleton pattern in Java? [closed]
...explained this approach in his Effective Java Reloaded talk at Google I/O 2008: link to video. Also see slides 30-32 of his presentation (effective_java_reloaded.pdf):
The Right Way to Implement a Serializable Singleton
public enum Elvis {
INSTANCE;
private final String[] favoriteSongs ...
How to implement “select all” check box in HTML?
...le(source) {
checkboxes = document.getElementsByName('foo');
for(var i=0, n=checkboxes.length;i<n;i++) {
checkboxes[i].checked = source.checked;
}
}
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How can I check if an element exists in the visible DOM?
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alexalex
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How do I compile and run a program in Java on my Mac?
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Compiling and running a Java application on Mac OSX, or any major operating system, is very easy...
Jackson databind enum case insensitive
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In version 2.4.0 you can register a custom serializer for all the Enum types (link to the github issue). Also you can replace the standard Enum deserializer on your own that will be aware about the Enum type. Here is an example:
public cla...
How can I remove all text after a character in bash?
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edited Jun 10 '18 at 5:04
XtraSimplicity
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Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.10:test
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edited Jan 14 at 12:40
zb226
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answered Nov 1...
SQLite: How do I save the result of a query as a CSV file?
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edited Jun 27 '14 at 20:04
lippertsjan
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answered May 20 '11 at 2...
Regular Expression to match string starting with “stop”
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^\w
If your flavor does not have the \w shortcut, you can use
^[a-zA-Z0-9]+
Be wary that this second idiom will only match letters and numbers, no symbol whatsoever.
Check your regex flavor manual to know what shortcuts are allowed and what exactly do they match (and how do they deal with Un...
Get name of currently executing test in JUnit 4
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answered Sep 15 '09 at 11:59
FroMageFroMage
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