This post is older than a year. Consider some information might not be accurate anymore.
This post list all essential property names for using HTTP or HTTPS connections in Java. For a more detailed explanation, visit the Java Networking and Proxies Documentation.
These basic property names are used within Java. For HTTPS just add the S to it.
public static final String HTTP_PROXY_HOST = "http.proxyHost";
public static final String HTTP_PROXY_PORT = "http.proxyPort";
public static final String HTTP_PROXY_USER = "http.proxyUser";
public static final String HTTP_PROXY_PASSWORD = "http.proxyPassword";
Set properties at runtime
System.getProperties().put("http.proxyHost", "ProxyURL");
System.getProperties().put("http.proxyPort", "ProxyPort");
System.getProperties().put("http.proxyUser", "UserName");
System.getProperties().put("http.proxyPassword", "Password");
Pass as program arguments
$> java -Dhttp.proxyHost=proxyhostURL -Dhttp.proxyPort=proxyPortNumber
-Dhttp.proxyUser=UserName -Dhttp.proxyPassword=Password ProxyClassHere
Remove or cleanup the proxy setting
System.clearProperty(HTTP_PROXY_HOST);
System.clearProperty(HTTP_PROXY_PORT);
System.clearProperty(HTTP_PROXY_USER);
System.clearProperty(HTTP_PROXY_PASSWORD);
Update: 2019-07-11 - add no proxy example
Exclude a list of hosts that should not use the defined proxy.
-Dhttp.nonProxyHosts="localhost|cinhtau.net|cinhtau.de"
