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How to set JVM parameters for Junit Unit Tests?
...For the rest - you must remember that JUnit test cases are just a bunch of Java classes, not a standalone program. It is up to the runner (let it be a standalone JUnit runner, your IDE, maven-surefire-plugin to set those options. That being said there is no "portable" way to set them, so that memory...
Handling exceptions from Java ExecutorService tasks
I'm trying to use Java's ThreadPoolExecutor class to run a large number of heavy weight tasks with a fixed number of threads. Each of the tasks has many places during which it may fail due to exceptions.
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Select unique or distinct values from a list in UNIX shell script
...mmandline options:
Given the following input:
class
jar
jar
jar
bin
bin
java
uniq will output all lines exactly once:
class
jar
bin
java
uniq -d will output all lines that appear more than once, and it will print them once:
jar
bin
uniq -u will output all lines that appear exactly once,...
Is the != check thread safe?
... This is the bytecode for test()
ALOAD 0
GETFIELD test/Test1.a : Ljava/lang/Object;
ALOAD 0
GETFIELD test/Test1.a : Ljava/lang/Object;
IF_ACMPEQ L1
...
as we can see it loads field a to local vars twice, it's a non-atomic operation, if a was changed in between by another thre...
Does Java 8 provide a good way to repeat a value or function?
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Closures will completely transform Java code, for the better. Looking forward to that day...
– Marko Topolnik
Aug 30 '13 at 12:11
1
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Why doesn't the JVM cache JIT compiled code?
... to take resources from other projects. Given the choice between this and Java 8 lambda+streams I'd rather have the latter.
– Thorbjørn Ravn Andersen
Jan 1 '15 at 19:20
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Java “params” in method signature?
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In Java it's called varargs, and the syntax looks like a regular parameter, but with an ellipsis ("...") after the type:
public void foo(Object... bar) {
for (Object baz : bar) {
System.out.println(baz.toString());
...
When using the Java debugger in Intellij what does “Drop Frame” mean?
I was using the Java debugger within Intellij 8 and noticed a button labeled "drop frame", does anybody know what purpose this serves? How/why would this be used/useful?
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Error message 'java.net.SocketException: socket failed: EACCES (Permission denied)'
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Add those source code to your Java file as below:
StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder().detectDiskReads().detectDiskWrites().detectNetwork().penaltyLog().build());
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Typing Enter/Return key using Python and Selenium?
...um.Keys
WebElement.sendKeys(Keys.RETURN);
the import statement is for Java, for other languages it is maybe a different, for example python: from selenium.webdriver.common.keys import Keys
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