Class DemoHelper

java.lang.Object

org.newsclub.net.unix.demo.DemoHelper

public final class DemoHelper
extends Object

Just a helper class to simplify controlling the demo from the command line.

Method Summary

Modifier and Type	Method	Description
static void	addProperty(Properties props, String key, String defaultValue, String property, String exampleValue)	Adds a key-value pair to a Properties instance.
static Socket	connectSocket(SocketAddress socketAddress)
static String	getPropertyValue(String property, String defaultValue, String exampleValue)
static <R> R	getPropertyValue(String variable, String property, String defaultValue, String exampleValue, Function<String,R> valueConverter)
static <R> R	getPropertyValue(String property, String defaultValue, String exampleValue, Function<String,R> valueConverter)
static void	initJDBCDriverClass(String property, String defaultValue, String exampleValue)
static SocketAddress	parseAddress(String[] args, SocketAddress defaultAddress)
static SocketAddress	parseAddress(String opt, String val, SocketAddress defaultAddress)
static SocketAddress	socketAddress(String socketName)

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

addProperty

public static void addProperty(Properties props,
 String key,
 String defaultValue,
 String property,
 String exampleValue)

Adds a key-value pair to a Properties instance. Takes values from a given system property and overrides the default value with it.

Parameters:

props - The Properties instance to write to.

key - The name of the property.

defaultValue - The default value (for demo purposes)

property - The name of the system property that can override the default value.

exampleValue - An example value that is different from the default.

initJDBCDriverClass

public static void initJDBCDriverClass(String property,
 String defaultValue,
 String exampleValue)
                                throws ClassNotFoundException

Throws:

ClassNotFoundException

getPropertyValue

public static String getPropertyValue(String property,
 String defaultValue,
 String exampleValue)

getPropertyValue

public static <R> R getPropertyValue(String property,
 String defaultValue,
 String exampleValue,
 Function<String,R> valueConverter)

getPropertyValue

public static <R> R getPropertyValue(String variable,
 String property,
 String defaultValue,
 String exampleValue,
 Function<String,R> valueConverter)

socketAddress

public static SocketAddress socketAddress(String socketName)
                                   throws IOException

Throws:

IOException

connectSocket

public static Socket connectSocket(SocketAddress socketAddress)
                            throws IOException

Throws:

IOException

parseAddress

public static SocketAddress parseAddress(String[] args,
 SocketAddress defaultAddress)
                                  throws IOException

Throws:

IOException

parseAddress

public static SocketAddress parseAddress(String opt,
 String val,
 SocketAddress defaultAddress)
                                  throws IOException

Throws:

IOException