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Convert list to array in Java [duplicate]

How can I convert a List to an Array in Java? 11 Answers 11 ...
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How to send SMS in Java

What are the possible ways to send and receive sms from Java application? 16 Answers 1...
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Attach IntelliJ IDEA debugger to a running Java process

Is it possible to attach the IntelliJ IDEA debugger to a running Java process? If yes, how? 5 Answers ...
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When do you use Java's @Override annotation and why?

What are the best practices for using Java's @Override annotation and why? 27 Answers ...
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java.lang.NoClassDefFoundError: com/sun/mail/util/MailLogger for JUnit test case for Java mail

I am using Java Mail API to read and parse emails. It is working fine with Servlet code. 7 Answers ...
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Using Build Flavors - Structuring source folders and build.gradle correctly

...her values from the flavors and build type to create the variant. For the Java source: src/main/java src/flavor1/java src/debug/java are all 3 used to create a single output. This means they can't define the same class. If you want to have a different version of the same class in the two flavor...
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How to create custom exceptions in Java? [closed]

How do we create custom exceptions in Java? 3 Answers 3 ...
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Calculate size of Object in Java [duplicate]

...zes of data structures) and it seems like there is no method to do this in Java. Supposedly, C/C++ has sizeOf() method, but this is nonexistant in Java. I tried recording the free memory in the JVM with Runtime.getRuntime().freeMemory() before and after creating the object and then recording the...
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Which is more efficient, a for-each loop, or an iterator?

...ew for loop syntax, compare the generated bytecodes from the following two Java snippets. First the for loop: List<Integer> a = new ArrayList<Integer>(); for (Integer integer : a) { integer.toString(); } // Byte code ALOAD 1 INVOKEINTERFACE java/util/List.iterator()Ljava/util/Itera...
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Get login username in java

How can I get the username/login name in Java? 8 Answers 8 ...