Oracle JDBC problem - Locale not recognized on Glassfish

When you create JDBC connection pool for oracle you may seen error like below:

Ping Connection Pool failed for DBNAME. Connection could not be allocated because: Locale not recognized Please check the server.log for more details.

Solution of this problem is so simple. How we can solve this problem???

Shuffle an Array in Java with Easy or Fast way

Objects are a powerful software engineering construct, and Java uses them extensively. While developing Android applications you need fast way of doing something. For example:
Often u need randomized Array which u will save state of stage or something.
In that case how you change order of Array randomly???

There are 2 famous way for this:

SOLVED: Unknown type '246 in column 2 of 3 in binary-encoded result set

Today at our firm was problem like as "Unknown type '246 in column 2 of 3 in binary-encoded result set" when selected table has column as decimal(10, 2) type. This errors cause because we use old version of mysql jdbc driver. Solution for this problem is:

1. Download new version of driver
2. Convert double column to char on selection.

   SELECT CAST(your_column AS char(15)) your_column FROM your_table;

   So in this case on java side u can get it as Double again.

Create your web services with Spring

In this post I will show "Spring way" to build RESTful web services. It also explained how to produce multiple representations (JSON, XML and etc.), which is an important feature for RESTful web services.
This article explains another way to produce multiple representations using HttpMessageConverter, and examples in the article show how to use RestTemplate with HttpMessageConverter to communicate with services. HTTP requests and responses are text based, meaning a browser and server communicate by exchanging raw texts. With Spring, however, methods in the controller class return pure 'String' type and domain models (or other Java built-in objects). How can Spring serialize/de-serialize the objects to raw texts? This is handled by HttpMessageConverter. Spring has bundled implementations that can meet your common needs. Table 1 shows some examples.

Read data from SSL X.509 Certificates

According to X.509, you can create certificates with either RSA or DSA key pairs. But only RSA key pairs are capable of exchanging keys when starting a new SSL connection with a SSL server. You can only use RSA key pairs as your server certificates. On the other hand, CAs do not have to exchange keys. They only issue other certificates. You can use either RSA or DSA key pair as your CAs. But, some SSL programs do not support the DSA algorithm yet.

Sometimes u need check certificate valid date on server. U can do this in java simple: