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Can I set enum start value in Java?

... Java enums are not like C or C++ enums, which are really just labels for integers. Java enums are implemented more like classes - and they can even have multiple attributes. public enum Ids { OPEN(100), CLOSE(200); ...
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How can I check if multiplying two numbers in Java will cause an overflow?

... Java 8 has Math.multiplyExact, Math.addExact etc. for ints and long. These throw an unchecked ArithmeticException on overflow. share | ...
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Converting List to List

... Solution for Java 8. A bit longer than the Guava one, but at least you don't have to install a library. import java.util.Arrays; import java.util.List; import java.util.stream.Collectors; //... List<Integer> integers = Arrays.asL...
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Java Garbage Collection Log messages

I have configured java to dump garbage collection information into the logs ( verbose GC ). I am unsure of what the garbage collection entries in the logs mean. A sample of these entries are posted below. I've searched around on Google and have not found solid explanations. ...
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What is Double Brace initialization in Java?

What is Double Brace initialization syntax ( {{ ... }} ) in Java? 13 Answers 13 ...
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How do I reverse an int array in Java?

I am trying to reverse an int array in Java. 43 Answers 43 ...
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No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?

... On your Eclipse IDE, go into Window > Preferences > Java > Installed JREs > and check your installed JREs. You should have an entry with a JDK there. Select the Execution Env as show below. Click OK Then Right-Click on your Project -> Maven -> Update Project Ad...
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Try-finally block prevents StackOverflowError

... the level above it. (Output: Finally Exception in thread "main" java.lang.Exception: TEST! at test.main(test.java:6) This makes sense, as finally is called right before exiting the method. This means, however, that once you get that first StackOverflowError, it will try to throw i...
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What does the arrow operator, '->', do in Java?

... code I came across the arrow operator, what exactly does it do? I thought Java did not have an arrow operator. 5 Answers ...
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Https Connection Android

...all to member FACTORY } FullX509TrustManager is a class that implements javax.net.ssl.X509TrustManager, yet none of the methods actually perform any work, get a sample here. Good Luck! share | i...