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Best way to build a Plugin system with Java
How would you implement a Plugin-system for your Java application?
8 Answers
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How to convert an ArrayList containing Integers to primitive int array?
... code, but it is throwing compile time error. Is it possible to convert in Java?
18 Answers
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adding multiple entries to a HashMap at once in one statement
..., 3);
}};
As a piece of warning, please refer to the thread Efficiency of Java “Double Brace Initialization" for the performance implications that it might have.
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Alternatives to java.lang.reflect.Proxy for creating proxies of abstract classes (rather than interf
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It can be done using Javassist (see ProxyFactory) or CGLIB.
Adam's example using Javassist:
I (Adam Paynter) wrote this code using Javassist:
ProxyFactory factory = new ProxyFactory();
factory.setSuperclass(Dog.class);
factory.setFilter(
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How to pass an ArrayList to a varargs method parameter?
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@JoshM. Java needs a lot of things. ;) I also (coming from a C# background) miss index operators. Working with dictionaries is much more smooth in C# than working with HashMaps in Java.
– Per Lundberg
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How can I pad an integer with zeros on the left?
How do you left pad an int with zeros when converting to a String in java?
16 Answers
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Difference between null and empty (“”) Java String
...ength()
a.substring(0, 1)
and so on.
If the String equals null, like b, Java would throw a NullPointerException if you tried invoking, say:
b.length()
If the difference you are wondering about is == versus equals, it's this:
== compares references, like if I went
String a = new String("");...
How to create a .jar file or export jar on IntelliJ (like eclipse java archive export) [duplicate]
I was using IntelliJ-IDEA IDE , I want to create a jar file from java compiled class files. but I not found command or file, How to create a jar file (like eclipse java archive export)
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Best way to compare 2 XML documents in Java
...r XMLUnit 1 on SourceForge. Also, the sourceforge page states "XMLUnit for Java 1.x will still be maintained".
– Yngvar Kristiansen
Feb 25 '16 at 8:00
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When is a Java method name too long? [closed]
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A name in Java, or any other language, is too long when a shorter name exists that equally conveys the behavior of the method.
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