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How to import a . cer certificate into a java keystore? During the development of a Java webservice client I ran into a problem Authentication for the webservice is using a client certificate, a username and a password The client certificate I receive
java - What is a NullPointerException, and how do I fix it? - Stack . . . Since you have not yet said what to point to, Java sets it to null In the second line, the new keyword is used to instantiate (or create) an object of type Integer, and the reference variable num is assigned to that Integer object If you attempt to dereference num before creating the object you get a NullPointerException
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
Setting JAVA_HOME environment variable in MS Windows JAVA_HOME and PATH are different, I didn't say point JAVA_HOME to the jre bin directory Try making sure that the PATH environment variable includes the jre bin directory For example, type java from the command prompt, does that work?
How to set the environment variables for Java in Windows Step 5: Enter the Variable name as JAVA_HOME and the value to your jdk bin path ie c:\Programfiles\Java\jdk-1 6\bin and NOTE Make sure u start with ; in the Value so that it doesn't corrupt the other environment variables which is already set
java - PKIX path building failed and unable to find valid . . . 138 After many hours trying to build cert files to get my Java 6 installation working with the new twitter cert's, I finally stumbled onto an incredibly simple solution buried in a comment in one of the message boards Just copy the cacerts file from a Java 7 installation and overwrite the one in your Java 6 installation
loops - Ways to iterate over a list in Java - Stack Overflow Being somewhat new to the Java language I'm trying to familiarize myself with all the ways (or at least the non-pathological ones) that one might iterate through a list (or perhaps other collection