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Import PEM into Java Key Store

I am trying to connect to an SSL server which requires me to authenticate myself. In order to use SSL over Apache MINA I need a suitable JKS file. However, I have only been given a .PEM file. ...
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Can an int be null in Java?

... int can't be null, but Integer can. You need to be careful when unboxing null Integers since this can cause a lot of confusion and head scratching! e.g. this: int a = object.getA(); // getA returns a null Integer will give you a NullPointerException, despite object...
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Which maven dependencies to include for spring 3.0?

I am trying to do my first project with Spring 3.0 (and maven). I have been using Spring 2.5 (and primer versions) in quite some projects. Nevertheless I am kinda confused, what modules I have to define as dependencies in my pom.xml. I just want to use the core container functions (beans, core, cont...
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Exact difference between CharSequence and String in java [duplicate]

...using javap -v. There you will notice that both obj and str are references to the same constant object. As a String is immutable, this kind of sharing is all right. The + operator of String is compiled as invocations of various StringBuilder.append calls. So it is equivalent to System.out.println(...
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Github Push Error: RPC failed; result=22, HTTP code = 413

...ht now. I have a decent amount of changes (~120MB in size), when I attempt to push, this is what happens: 17 Answers ...
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Creating threads - Task.Factory.StartNew vs new Thread()

...d, but the whole point is why do you need another thread? If you just want to do something in parallel (Main does sth. while Task runs) it is preferable to let a optimized library decide how to utilize system resources like threads to do this in the most efficient way. – sanosd...
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UITableViewCell show white background and cannot be modified on iOS7

I've implemented a custom table view cell class that inherit from UITableViewCell . The tableview contains a background image, so I want cell's background to be transparent. It looks great before iOS7. ...
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How to programmatically take a screenshot on Android?

... Here is the code that allowed my screenshot to be stored on an SD card and used later for whatever your needs are: First, you need to add a proper permission to save the file: <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> And thi...
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How to install a specific version of a ruby gem?

Using the command-line gem tool, how can I install a specific version of a gem? 6 Answers ...
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nullable object must have a value

... You should change the line this.MyDateTime = myNewDT.MyDateTime.Value; to just this.MyDateTime = myNewDT.MyDateTime; The exception you were receiving was thrown in the .Value property of the Nullable DateTime, as it is required to return a DateTime (since that's what the contract for .Value sta...