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Why does Java allow us to compile a class with a name different than the file name?
I have a file Test.java and the following code inside it.
8 Answers
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What is the best java image processing library/approach? [closed]
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There's ImageJ, which boasts to be the
world's fastest pure Java image
processing program
It can be used as a library in another application. It's architecture is not brilliant, but it does basic image processing tasks.
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Error 908: Permission RECEIVE_SMS has been denied. - App Inventor 2 中...
...，则权限将包含在清单中，并且（如果Android >= 6.0）在运行时请求。
在此更改之前，ReceivingEnabled的默认值是Foreground，而不是Off。因此，旧的教程可能不起作用，因为它们假设了旧的行为。人们需要有意识地启用接收选项才能...
Error java.lang.OutOfMemoryError: GC overhead limit exceeded
... objects in an already very memory-constrained environment.
Check out the Java GC tuning guide, which is available for various Java versions and contains sections about this specific problem:
Java 11 tuning guide has dedicated sections on excessive GC for different garbage collectors:
for the P...
How to remove line breaks from a file in Java?
How can I replace all line breaks from a string in Java in such a way that will work on Windows and Linux (ie no OS specific problems of carriage return/line feed/new line etc.)?
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How to get Android crash logs?
...g due to uncaught exception
09-04 21:35:15.397: ERROR/AndroidRuntime(778): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.dazlious.android.helloworld/com.dazlious.android.helloworld.main}: java.lang.ArrayIndexOutOfBoundsException
09-04 21:35:15.397: ERROR/AndroidRuntime(778):...
Java Reflection Performance
...oking up a class via reflection is, by magnitude, more expensive.
Quoting Java's documentation on reflection:
Because reflection involves types that are dynamically resolved, certain Java virtual machine optimizations can not be performed. Consequently, reflective operations have slower perform...
How to get image height and width using java?
...n't you also use probeContentType from the nio.Files package combined with javax.imageio.ImageIO.getImageReadersByMIMEType(mimeType) if you wanted to be certain of the type of file?
– EdgeCaseBerg
Nov 10 '15 at 19:14
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getResourceAsStream() vs FileInputStream
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The java.io.File and consorts acts on the local disk file system. The root cause of your problem is that relative paths in java.io are dependent on the current working directory. I.e. the directory from which the JVM (in your cas...
What are all the escape characters?
I know some of the escape characters in Java, e.g.
4 Answers
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