Exception in thread "main" javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an
 applet parameter, or in an application resource file:
 java.naming.factory.initial    at
 javax.naming.spi.NamingManager.getInitialContext(Unknown Source)   at
 javax.naming.InitialContext.getDefaultInitCtx(Unknown Source)  at
 javax.naming.InitialContext.getURLOrDefaultInitCtx(Unknown Source)     at
 javax.naming.InitialContext.lookup(Unknown Source)

public static Connection getDBConnection(String jndiName) throws NamingException, SQLException {
    Context initContext = new InitialContext();
    Context webContext = (Context)initContext.lookup(FISOProperties.getInstance().getProperty("jndi.lookup.base", "java:comp/env"));
    DataSource ds = (DataSource) webContext.lookup(jndiName);
    return ds.getConnection();
}

<Resource name="java:comp/env" auth="Container" type="javax.sql.DataSource"
  maxActive="100" maxIdle="30" maxWait="10000" username="root" password="qet321"
 driverClassName="com.mysql.jdbc.Driver" url="jdbc:mysql://localhost:3306/test" />