Code examples for the IBM Developer Kit for Java

The following is a list of code examples for the IBM^® Developer Kit for Java™.

Internationalization

• DateFormat
• NumberFormat
• ResourceBundle

JDBC

• Access property
• Blob
• CallableStatement interface
• Change values with a statement through another statement's cursor
• Clob
• Create a UDBDataSource and bind it with JNDI
• Create a UDBDataSource, and obtain a user ID and password
• Create a UDBDataSourceBind and set DataSource properties
• DatabaseMetaData interface
• Create a UDBDataSource and bind it with JNDI
• Datalink
• Distinct types
• Embed SQL Statements
• End a transaction
• Invalid user ID and password
• JDBC
• Multiple connections that work on a transaction
• Obtain an initial context before binding UDBDataSource
• ParameterMetaData
• Remove values from a table through another statement's cursor
• ResultSet interface
• ResultSet sensitivity
• Sensitive and insensitive ResultSets
• Set up connection pooling with UDBDataSource and UDBConnectionPoolDataSource
• SQLException
• Suspend and resume a transaction
• Suspended ResultSets
• Test the performance of connection pooling
• Test the performance of two DataSources
• Update BLOBs
• Update CLOBs
• Use a connection with multiple transactions
• Use BLOBs
• Use CLOBs
• Use DB2CachedRowSet properties and DataSources
• Use DB2CachedRowSet properties and JDBC URLs
• Use JTA to handle a transaction
• Use metadata ResultSets that have more than one column
• Use native JDBC and IBM Toolbox for Java JDBC concurrently
• Use PreparedStatement to obtain a ResultSet
• Use the execute(Connection) method to use an existing database connection
• Use the execute(int) method to batch database requests together
• Use the populate method
• Use the setConnection(Connection) method to use an existing database connection
• Use the Statement object's executeUpdate method

Java Authentication and Authorization Service

• JAAS HelloWorld example
• JAAS SampleThreadSubjectLogin example

Java Generic Security Service

• Sample non-JAAS client program
• Sample non-JAAS server program
• Sample JAAS-enabled client program
• Sample JAAS-enabled server program

Java Secure Sockets Extension

• SSL client and server using an SSLContext object

Java with other programming languages

• Call a CL program
• Call a CL command
• Call another Java program
• Call Java from C
• Call Java from RPG
• Input and output streams
• Invocation API
• i5/OS™ PASE native method for Java
• Sockets
• Use the Java Native Interface for native methods

Performance tools

• Java Performance Data Converter

SQLJ

• Embed SQL Statements in your Java application

Secure sockets layer

• Socket factories
• Server socket factories
• Secure sockets layer
• Secure sockets layer server

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• Example: Internationalization of dates using the java.util.DateFormat class
  This example shows how you can use locales to format dates.
• Example: Internationalization of numeric display using the java.util.NumberFormat class
  This example shows how you can use locales to format numbers.
• Example: Internationalization of locale-specific data using the java.util.ResourceBundle class
  This example shows how you can use locales with resource bundles to internationalize program strings.
• Example: Access property
  This is an example of how to use the Access property.
• Example: BLOB
  This is an example of how a BLOB can be put into the database or retrieved from the database.
• Example: CallableStatement interface for IBM Developer Kit for Java
  This is an example of how to use the CallableStatement interface.
• Example: Remove values from a table through another statement's cursor
  This is an example of how to remove values from a table through another statement's cursor.
• Example: CLOB
  This is an example of how a CLOB can be put into the database or retrieved from the database.
• Example: Create a UDBDataSource and bind it with JNDI
  This is an example of how to create a UDBDataSource and get it bound with JNDI.
• Example: Create a UDBDataSource, and obtain a user ID and password
  This is an example of how to create a UDBDataSource, and use the getConnection method to obtain a user ID and password at runtime.
• Example: Create a UDBDataSourceBind and set DataSource properties
  This is an example of how to create a UDBDataSource, and set the user ID and password as DataSource properties.
• Example: DatabaseMetaData interface for IBM Developer Kit for Java - Return a list of tables
  This example shows how to return a list of tables.
• Example: Datalink
  This is an example of how to use datalinks in your applications.
• Example: Distinct types
  This is an example of how to use distinct types.
• Example: Embed SQL Statements in your Java application
  The following example SQLJ application, App.sqlj, uses static SQL to retrieve and update data from the EMPLOYEE table of the DB2^® sample database.
• Example: End a transaction
  This is an example of ending a transaction in your application.
• Example: Invalid user ID and password
  This is an example of how to use the Connection property in SQL naming mode.
• Example: JDBC
  This is an example of how to use the BasicJDBC program.
• Example: Multiple connections that work on a transaction
  This is an example of how to use multiple connections working on a single transaction.
• Example: Obtain an initial context before binding UDBDataSource
  The following example obtains an initial context before binding the UDBDataSource. The lookup method is then used on that context to return an object of type DataSource for the application to use.
• Example: ParameterMetaData
  This is an example of using the ParameterMetaData interface to retrieve information about parameters.
• Example: Change values with a statement through another statement's cursor
  This is an example of how to change values with a statement through another statement's cursor.
• Example: ResultSet interface for IBM Developer Kit for Java
  This is an example of how to use the ResultSet interface.
• Example: ResultSet sensitivity
  The following example shows how a change can affect a where clause of an SQL statement based on the sensitivity of the ResultSet.
• Example: Sensitive and insensitive ResultSets
  The following example shows the difference between sensitive and insensitive ResultSets when rows are inserted into a table.
• Example: Set up connection pooling with UDBDataSource and UDBConnectionPoolDataSource
  This is an example of how to use connection pooling with UDBDataSource and UDBConnectionPoolDataSource.
• Example: SQLException
  This is an example of catching an SQLException and dumping all the information that it provides.
• Example: Suspend and resume a transaction
  This is an example of a transaction that is suspended and then is resumed.
• Example: Suspended ResultSets
  This is an example of the how a Statement object is reprocessed under another transaction to perform work.
• Example: Test the performance of connection pooling
  This is an example of how to test the performance of the pooling example against the performance of the non-pooling example.
• Example: Test the performance of two DataSources
  This is an example of testing one DataSource that uses connection pooling only and the other DataSource that uses statement and connection pooling.
• Example: Update BLOBs
  This is an example of how to update BLOBs in your applications.
• Example: Update CLOBs
  This is an example of how to update CLOBs in your applications.
• Example: Use a connection with multiple transactions
  This is an example of how to use a single connection with multiple transactions.
• Example: Use BLOBs
  This is an example of how to use BLOBs in your applications.
• Example: Use CLOBs
  This is an example of how to use CLOBs in your applications.
• Example: Use JTA to handle a transaction
  This is an example of how to use the Java Transaction API (JTA) to handle a transaction in an application.
• Example: Use metadata ResultSets that have more than one column
  This is an example of how to use metadata ResultSets that have more than one column.
• Example: Use native JDBC and IBM Toolbox for Java JDBC concurrently
  This is an example of how to use the native JDBC connection and the IBM Toolbox for Java JDBC connection in a program.
• Example: Use PreparedStatement to obtain a ResultSet
  This is an example of using a PreparedStatement object's executeQuery method to obtain a ResultSet.
• Create and populate a DB2CachedRowSet
  There are several ways to place data into a DB2CachedRowSet.
• Example: Use the Statement object's executeUpdate method
  This is an example of how to use the Statement object's executeUpdate method.
• Examples: JAAS HelloWorld
  These examples show you the three files that are needed to compile and run HelloWorld for JAAS.
• Example: JAAS SampleThreadSubjectLogin
  
• Sample: IBM JGSS non-JAAS client program
  
• Sample: IBM JGSS non-JAAS server program
  
• Sample: IBM JGSS JAAS-enabled client program
  
• Sample: IBM JGSS JAAS-enabled server program
  
• Examples: IBM Java Secure Sockets Extension
  The JSSE examples show how a client and a server can use the native iSeries™ JSSE provider to create a context that enables secure communications.
• Example: Call a CL program with java.lang.Runtime.exec()
  This example shows how to run CL programs from within a Java program. In this example, the Java class CallCLPgm runs a CL program.
• Example: Call a CL command with java.lang.Runtime.exec()
  This example shows how to run a control language (CL) command from within a Java program.
• Example: Call another Java program with java.lang.Runtime.exec()
  This example shows how to call another Java program with java.lang.Runtime.exec(). This class calls the Hello program that is shipped as part of the IBM Developer Kit for Java. When the Hello class writes to System.out, this program gets a handle to the stream and can read from it.
• Example: Call Java from C
  This is an example of a C program that uses the system() function to call the Java Hello program.
• Example: Call Java from RPG
  This is an example of an RPG program that uses the QCMDEXC API to call the Java Hello program.
• Example: Use input and output streams for interprocess communication
  This example shows how to call a C program from Java and use input and output streams for interprocess communication.
• Example: Java Invocation API
  This example follows the standard Invocation API paradigm.
• Example: IBM i5/OS PASE native method for Java
  The IBM i5/OS PASE native method for Java example calls an instance of a native C method that then uses Java Native Interface (JNI) to call back into Java code. Rather than accessing the string directly from Java code, the example calls a native method that then calls back into Java through JNI to get the string value.
• Examples: Use the Java Native Interface for native methods
  This example program is a simple Java Native Interface (JNI) example in which a C native method is used to display "Hello, World." Use the javah tool with the NativeHello class file to generate the NativeHello.h file. This example assumes that the NativeHello C implementation is part of a service program that is called NATHELLO.
• Example: Use sockets for interprocess communication
  This example uses sockets to communicate between a Java program and a C program.
• Example: Run the Java Performance Data Converter
  You can either use the iSeries™ command line or the Qshell environment to run the Java Performance Data Converter (JPDC).
• Examples: Change your Java code to use client socket factories
  These examples show you how to change a simple socket class, named simpleSocketClient, so that it uses socket factories to create all of the sockets. The first example shows you the simpleSocketClient class without socket factories. The second example shows you the simpleSocketClient class with socket factories. In the second example, simpleSocketClient is renamed to factorySocketClient.
• Examples: Change your Java code to use server socket factories
  These examples show you how to change a simple socket class, named simpleSocketServer, so that it uses socket factories to create all of the sockets. The first example shows you the simpleSocketServer class without socket factories. The second example shows you the simpleSocketServer class with socket factories. In the second example, simpleSocketServer is renamed to factorySocketServer.
• Examples: Change your Java client to use secure sockets layer
  These examples show you how to change one class, named factorySocketClient, to use secure sockets layer (SSL). The first example shows you the factorySocketClient class not using SSL. The second example shows you the same class, renamed factorySSLSocketClient, using SSL.
• Examples: Change your Java server to use secure sockets layer
  These examples show you how to change one class, named factorySocketServer, to use secure sockets layer (SSL).