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- What is the difference between == and equals () in Java?
0 In Java, == and the equals method are used for different purposes when comparing objects Here's a brief explanation of the difference between them along with examples: == Operator: The == operator is used for reference comparison It checks whether two references point to the exact same object in memory Example: String str1 = new String
- java - (AND) and || (OR) in IF statements - Stack Overflow
Java has 5 different boolean compare operators: , , |, ||, ^ and are "and" operators, | and || "or" operators, ^ is "xor" The single ones will check every parameter, regardless of the values, before checking the values of the parameters The double ones will first check the left parameter and its value and if true (||) or false ( ) leave the second one untouched Sound compilcated? An
- What are the -Xms and -Xmx parameters when starting JVM?
The flag Xmx specifies the maximum memory allocation pool for a Java Virtual Machine (JVM), while Xms specifies the initial memory allocation pool This means that your JVM will be started with Xms amount of memory and will be able to use a maximum of Xmx amount of memory For example, starting a JVM like below will start it with 256 MB of memory and will allow the process to use up to 2048 MB
- java - How to view and edit cacerts file? - Stack Overflow
As far as the original question, you can use the keytool command to view and edit a keystore like cacerts To view all keys in the keystore, use keytool -list: $ keytool -list -keystore ${keystore file} where ${keystore file} is the path to the cacerts file, in your case C:\IBM\Websphere85\jdk\jre\lib\security\cacerts To remove a specific key, use keytool -delete: $ keytool -delete -alias
- java - SSL and cert keystore - Stack Overflow
How does my Java program know where my keystore containing the certificate is? Or alternatively: How do I tell my Java program where to look for the keystore? After specifying the keystore in some
- What does the arrow operator, - gt;, do in Java? - Stack Overflow
While hunting through some code I came across the arrow operator, what exactly does it do? I thought Java did not have an arrow operator return (Collection lt;Car gt;) CollectionUtils select(list
- java - Populating Spring @Value during Unit Test - Stack Overflow
If possible I would try to write those test without Spring Context If you create this class in your test without spring, then you have full control over its fields To set the @value field you can use Springs ReflectionTestUtils - it has a method setField to set private fields @see JavaDoc: ReflectionTestUtils setField (java lang Object, java lang String, java lang Object)
- java - Extracting . jar file with command line - Stack Overflow
Java has a class specifically for zip files and one even more specifically for Jar Files java util jar JarOutputStream java util jar JarInputStream using those you could, on a command from the console, using a scanner set to system in Scanner console = new Scanner(System in); String input = console nextLine(); then get all the components and write them as a file JarEntry JE = null; while((JE
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