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How should I have explained the difference between an Interface and an Abstract class?
..... sure it's a nice technique. I suppose it's also worth pointing out that Java 8 has finally admitted that C++ was right and that multiple inheritance can be done and can have a use and so interfaces can now define not just function signatures but also provide default implementations. As such, usin...
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize
When building a Java 8 project with Maven:
8 Answers
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How do I get my Maven Integration tests to run
...ct and in each of my child modules I have JUnit tests that are named Test.java and Integration.java for unit tests and integration tests respectively. When I execute:
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How to make a new List in Java
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List myList = new ArrayList();
or with generics (Java 7 or later)
List<MyType> myList = new ArrayList<>();
or with generics (Old java versions)
List<MyType> myList = new ArrayList<MyType>();
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How to get HTTP response code for a URL in Java?
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getting Exception in thread "main" java.net.ConnectException: Connection refused: connect I dont know why i am getting this.
– Ganesa Vijayakumar
Dec 3 '13 at 6:15
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Paste a multi-line Java String in Eclipse [duplicate]
Unfortunately, Java has no syntax for multi-line string literals. No problem if the IDE makes it easy to work with constructs like
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How to copy a java.util.List into another java.util.List
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Javadoc: docs.oracle.com/javase/1.4.2/docs/api/java/util/…
– lcguida
Jan 14 '13 at 13:55
5
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Java Set retain order?
Does a Java Set retain order? A method is returning a Set to me and supposedly the data is ordered but iterating over the Set, the data is unordered. Is there a better way to manage this? Does the method need to be changed to return something other than a Set?
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JFrame in full screen Java
...dn't have to use setExtendedState. Tested working using Kubuntu 15.10 with Java 8.
– code_dredd
Jan 16 '16 at 20:54
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Odd behavior when Java converts int to byte?
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In Java, an int is 32 bits. A byte is 8 bits .
Most primitive types in Java are signed, and byte, short, int, and long are encoded in two's complement. (The char type is unsigned, and the concept of a sign is not applicable to...