Java2007-10-13
Operator Precedence in Java
Operators are special symbols that perform specific operations on one, two, or three operands, and then return a result.
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Java2007-10-13
arraycopy example in Java
The System class has an arraycopy method that you can use to efficiently copy data from one array into another:
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Default Values for Data Types in Java
It's not always necessary to assign a value when a field is declared. Fields that are declared but not initialized will be set to a resonable default by the compiler. Generally spe
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Data Types in Java
The Java programming language is strongly-typed, which means that all variables must first be declared before they can be used. This involves stating the variable's type and name,
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java.lang.NoClassDefFoundError and java.lang.NoSuchMethodError in UNIX
One of the places java tries to find your bytecode file is your current directory. So, for example, if your bytecode file is in /home/jdoe/java, you should change your current dire
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java.lang.NoClassDefFoundError and java.lang.NoSuchMethodError
One of the places java tries to find your .class file is your current directory. So if your .class file is in C:\java, you should change your current directory to that. To change y
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JDBC2007-10-13
Calling a Stored Procedure from JDBC in Java
JDBC allows you to call a database stored procedure from an application written in the Java programming language. The first step is to create a CallableStatement object. As with St
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setSavepoint and releaseSavepoint Example in Java
The JDBC 3.0 API adds the method Connection.setSavepoint, which sets a savepoint within the current transaction. The Connection.rollback method has been overloaded to take a savepo
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PreparedStatement Example in Java
Sometimes it is more convenient to use a PreparedStatement object for sending SQL statements to the database. This special type of statement is derived from the more general class,
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Creating Database Tables Using ANT
First, you can use a properties file to feed ANT, which has a simple sql target. Create a simple properties file, such as the one below:
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Using the DriverManager Class vs Using a DataSource Object for a connection
The DriverManager class works with the Driver interface to manage the set of drivers available to a JDBC client. When the client requests a connection and provides a URL, the Drive
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Stored Procedures example in SQL
A stored procedure is a group of SQL statements that can be called by name. In other words, it is executable code, a mini-program, that performs a particular task that can be invok
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