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Differences between “java -cp” and “java -jar”?
What is the difference between running a Java application with java -cp CLASSPATH and java -jar JAR_FILE_PATH ? Is one of them preferred to the other for running a Java application? I mean which one of these ways is more expensive for JVM (according to their machine resources usage)?
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Why do some claim that Java's implementation of generics is bad?
I've occasionally heard that with generics, Java didn't get it right. (nearest reference, here )
13 Answers
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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...
Converting JSON data to Java object
I want to be able to access properties from a JSON string within my Java action method. The string is available by simply saying myJsonString = object.getJson() . Below is an example of what the string can look like:
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What's the difference between JPA and Hibernate? [closed]
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So, when you are using Hibernate with JPA, the {java.persistence } annotations will work or you will have to use {org.hibernate} annotations?
– Bosco
Feb 11 '14 at 18:30
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Java generics type erasure: when and what happens?
I read about Java's type erasure on Oracle's website .
7 Answers
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Java SimpleDateFormat(“yyyy-MM-dd'T'HH:mm:ss'Z'”) gives timezone as IST
...the default timezone of the JVM by setting user.timezone system property: java -Duser.timezone=GMT ...
– kisna
Mar 15 '18 at 19:35
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Tips for using Vim as a Java IDE? [closed]
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command to get help on java syntax highlighting. :help java.vim
– Michael Ekoka
Feb 8 '10 at 7:47
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Java or Python for Natural Language Processing [closed]
...now which programming language is better for natural language processing. Java or Python ? I have found lots of questions and answers regarding about it. But I am still lost in choosing which one to use.
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为AppInventor2开发拓展(Extension) · App Inventor 2 中文网
...原生组件实现不了的、更加强大的功能。
一般拓展采用java/kotlin语言进行开发，由于拓展开发相当于直接使用安卓原生开发语言开发安卓相关功能，因此理论上拓展可以实现任何的安卓功能。
注意：java/kotlin写出来的拓展只能...