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Best way to encode text data for XML in Java?
Very similar to this question , except for Java.
21 Answers
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Why is 128==128 false but 127==127 is true when comparing Integer wrappers in Java?
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When you compile a number literal in Java and assign it to a Integer (capital I) the compiler emits:
Integer b2 =Integer.valueOf(127)
This line of code is also generated when you use autoboxing.
valueOf is implemented such that certain numbers are "pooled", ...
Strings are objects in Java, so why don't we use 'new' to create them?
...ring literals [ie, Strings like "abcd" but not like new String("abcd")] in Java are interned - this means that every time you refer to "abcd", you get a reference to a single String instance, rather than a new one each time. So you will have:
String a = "abcd";
String b = "abcd";
a == b; //True
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At runtime, find all classes in a Java application that extend a base class
...n, InstantiationException {
Reflections reflections = new Reflections("java.util");
Set<Class<? extends List>> classes = reflections.getSubTypesOf(java.util.List.class);
for (Class<? extends List> aClass : classes) {
System.out.println(aClass.getName());
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How do I pass a class as a parameter in Java?
Is there any way to pass class as a parameter in Java and fire some methods from that class?
10 Answers
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Why don't Java's +=, -=, *=, /= compound assignment operators require casting?
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A likely reason to why the Java compiler adds a typecast is because if you're trying to perform arithmetic on incompatible types, there is no way of performing a typecast of the result using the contracted form. A typecast of the result is generally mo...
What's the nearest substitute for a function pointer in Java?
...pplication for passing in a function pointer to replace that one line, but Java doesn't have function pointers. What's my best alternative?
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What are the main uses of yield(), and how does it differ from join() and interrupt()?
I am a little bit confused about the use of yield() method in Java, specifically in the example code below. I've also read that yield() is 'used to prevent execution of a thread'.
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“Code too large” compilation error in Java
Is there any maximum size for code in Java? I wrote a function with more than 10,000 lines. Actually, each line assigns a value to an array variable.
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Get generic type of class at runtime
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I am getting java.lang.Class cannot be cast to java.lang.reflect.ParameterizedType for this answer.
– Tomáš Zato - Reinstate Monica
May 1 '15 at 13:14
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