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How to sort List of objects by some property
...Scores().get(0).compareTo(o1.getScores().get(0));
}
});
With Java 8 onwards, you can simply use lambda expression to represent Comparator instance.
Collections.sort(scores, (s1, s2) -> { /* compute and return int */ });
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What's the fastest way to merge/join data.frames in R?
... 2.73 0.02 NA NA
1 aggregate 1 14.89 5.298932 14.89 0.00 NA NA
2 data.table 1 132.46 47.138790 131.70 0.08 NA NA
3 plyr 1 212.69 75.690391 211.57 0.56 NA NA
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How to increase heap size of an android application?
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@ per app does heap limit at java level and native is different? i.e example on s5 devcie 128mb java heap limit and native can take another128 mb?
– NitZRobotKoder
Dec 11 '17 at 16:01
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Correct idiom for managing multiple chained resources in try-with-resources block?
The Java 7 try-with-resources syntax (also known as ARM block ( Automatic Resource Management )) is nice, short and straightforward when using only one AutoCloseable resource. However, I am not sure what is the correct idiom when I need to declare multiple resources that are dependent on each ot...
Eclipse: Files opened by multiple searches using same editor tab
...n using the "file search" function in eclipse to find a bit of text in a ".java" file, I may get a list of several search results. Let's say I double click on the file "A.java" which then opens A.java in a new editor tab. If I then use the "file search" function again to find some other bit of tex...
How to save a BufferedImage as a File
I am using the imgscalr Java library to resize an image .
6 Answers
6
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How can I pass a parameter to a Java Thread?
Can anyone suggest to me how I can pass a parameter to a thread?
18 Answers
18
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What is an EJB, and what does it do?
...t EJBs support both local and remote network access - including
via local java interface, transparent RMI, JMS async message and SOAP/REST web service,
saving from cut-and-paste jar dependencies with multiple (inconsistent?) deployments.
They are very useful for creating SOA services. When used for...
Java String - See if a string contains only numbers and not letters
I have a string that I load throughout my application, and it changes from numbers to letters and such. I have a simple if statement to see if it contains letters or numbers but, something isn't quite working correctly. Here is a snippet.
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Private vs Protected - Visibility Good-Practice Concern [closed]
...accessible from subclasses, and make that protected (and final, talking of Java, if you want to make it accessible but not overridable). But be aware that, as soon as you accept to have subclasses of your class, and there is a protected field or method, this field or method is part of the public API...