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What is the difference between Tomcat, JBoss and Glassfish?
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Note to readers, JBoss is now Java EE 6 Full Profile certified like GlassFish. As well Tomcat is now Java EE 6 Web Profile certified via TomEE and supports EJB, CDI, JSF, JPA, and more.
– David Blevins
Jul 24 '1...
How do I create a readable diff of two spreadsheets using git diff?
...with dbUnit . There are no easy ways of doing diffs on xls files that I know of, and this makes merging extremely tedious and error prone.
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How to establish a connection pool in JDBC?
...etAcquireIncrement(5);
cpds.setMaxPoolSize(20);
// The DataSource cpds is now a fully configured and usable pooled DataSource
But if you are running inside an application server, I would recommend to use the built-in connection pool it provides. In that case, you'll need to configure it (refer t...
How do I run a Java program from the command line on Windows?
... saved your file as A.text first thing you should do is save it as A.java. Now it is a Java file.
Now you need to open cmd and set path to you A.java file before compile it. you can refer this for that.
Then you can compile your file using command
javac A.java
Then run it using
java A
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How to create a directory using nerdtree
...s 'm'; you should see a menu at the bottom. Type in 'a' for add childnode. Now input the directory you want to create, making sure to add a '/' at the end, otherwise the script would create a file.
AFAIK NERDTree cannot create parent directories like 'mkdir -p' does.
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Git: How to return from 'detached HEAD' state
...u want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again.
Example:
git checkout -b <new-branch-name>
HEAD is now at 50a7153d7... Merge branch 'hotfix/1.87.1'
In a case like this you may need to use --force (when...
pycharm running way slow
...hon file was focused in the editor, but this was fixed with version 5. But now with version 2016.1.2 the IDE seems to randomly start using >50% even with all editor files closed and nothing running and in Power Save mode, and it carries on indefinitely until I close PyCharm, and soon starts again...
“Connection for controluser as defined in your configuration failed” with phpMyAdmin in XAMPP
...nd again using the password you set during installation. If it logs in you now know what the password is.
Edit /etc/phpadmin/config-db.php and change $dbpass=''; to $dbpass='Your Password'; and save the file.
Edit /etc/dbconfig-common/phpmyadmin.conf change dbc_dbpass=''; to dbc_dbpass='Your Passwor...
Nested function in C
... Other languages supported by GCC do have them (ADA and Pascal that I know of), so it is likely that either it was easy to add to the C implementation or that it was added to C in order to make in preparation for supporting languages which require them.
– nategoose
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How does password salt help against a rainbow table attack?
...d the salt, so when running the dictionary attack, she can simply use the known salt when attempting to crack the password.
A public salt does two things: makes it more time-consuming to crack a large list of passwords, and makes it infeasible to use a rainbow table.
To understand the first one, i...