```
public class NtpUtil
extends Object
```
Utilities to update the local time using NTP.

Field Summary

Fields
Modifier and Type	Field	Description
`static String`	`NTP_ATTEMPTS_PROPERTY`	Property to set the NTP attempts.
`static int`	`NTP_DEFAULT_ATTEMPTS`	Default NTP attempts.
`static int`	`NTP_DEFAULT_GUARD_TIME`	Default NTP guard time.
`static int`	`NTP_DEFAULT_PORT`	Default NTP port.
`static String`	`NTP_DEFAULT_SERVER`	Default NTP URL.
`static int`	`NTP_DEFAULT_TIMEOUT`	Default NTP timeout.
`static String`	`NTP_GUARD_TIME_PROPERTY`	Property to set the NTP guard time.
`static String`	`NTP_PORT_PROPERTY`	Property to set the NTP port.
`static String`	`NTP_TIMEOUT_PROPERTY`	Property to set the NTP timeout.
`static String`	`NTP_URL_PROPERTY`	Property to set the NTP URL.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static void`	`updateLocalTime()`	Updates the local time.
`static void`	`updateLocalTime(String url, int port, int timeout)`	Updates the local time.

Methods inherited from class java.lang.Object
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - NTP_URL_PROPERTY
```
public static final String NTP_URL_PROPERTY
```
    Property to set the NTP URL.
    
    See Also:
    
    Constant Field Values
  - NTP_PORT_PROPERTY
```
public static final String NTP_PORT_PROPERTY
```
    Property to set the NTP port.
    
    See Also:
    
    Constant Field Values
  - NTP_TIMEOUT_PROPERTY
```
public static final String NTP_TIMEOUT_PROPERTY
```
    Property to set the NTP timeout.
    
    See Also:
    
    Constant Field Values
  - NTP_ATTEMPTS_PROPERTY
```
public static final String NTP_ATTEMPTS_PROPERTY
```
    Property to set the NTP attempts.
    
    See Also:
    
    Constant Field Values
  - NTP_GUARD_TIME_PROPERTY
```
public static final String NTP_GUARD_TIME_PROPERTY
```
    Property to set the NTP guard time.
    
    See Also:
    
    Constant Field Values
  - NTP_DEFAULT_PORT
```
public static final int NTP_DEFAULT_PORT
```
    Default NTP port.
    
    See Also:
    
    Constant Field Values
  - NTP_DEFAULT_SERVER
```
public static final String NTP_DEFAULT_SERVER
```
    Default NTP URL.
    
    See Also:
    
    Constant Field Values
  - NTP_DEFAULT_TIMEOUT
```
public static final int NTP_DEFAULT_TIMEOUT
```
    Default NTP timeout.
    
    See Also:
    
    Constant Field Values
  - NTP_DEFAULT_ATTEMPTS
```
public static final int NTP_DEFAULT_ATTEMPTS
```
    Default NTP attempts.
    
    See Also:
    
    Constant Field Values
  - NTP_DEFAULT_GUARD_TIME
```
public static final int NTP_DEFAULT_GUARD_TIME
```
    Default NTP guard time.
    
    See Also:
    
    Constant Field Values
- Method Detail
  - updateLocalTime
```
public static void updateLocalTime()
                            throws IOException
```
    Updates the local time. It uses the properties "ntp.url", "ntp.port" and "ntp.timeout" to parameterize the NTP requests. The default values are "0.pool.ntp.org":123 with a timeout 1000.
    
    Throws:
    
    IOException - if an error occurred.
  - updateLocalTime
```
public static void updateLocalTime(String url,
                                   int port,
                                   int timeout)
                            throws IOException
```
    Updates the local time.
    When this method returns, the application time is updated.
    
    Parameters:
    
    url - the NTP server URL.
    
    port - the NTP server port.
    
    timeout - the timeout for one NTP request.
    
    Throws:
    
    IOException - if an error occurred.
    
    See Also:
    
    Util.currentTimeMillis()

Class NtpUtil

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

NTP_URL_PROPERTY

NTP_PORT_PROPERTY

NTP_TIMEOUT_PROPERTY

NTP_ATTEMPTS_PROPERTY

NTP_GUARD_TIME_PROPERTY

NTP_DEFAULT_PORT

NTP_DEFAULT_SERVER

NTP_DEFAULT_TIMEOUT

NTP_DEFAULT_ATTEMPTS

NTP_DEFAULT_GUARD_TIME

Method Detail

updateLocalTime

updateLocalTime