import com.trilead.ssh2.log.Logger; //导入依赖的package包/类
/**
 * Enable/disable debug logging. <b>Only do this when requested by Trilead
 * support.</b>
 * <p>
 * For speed reasons, some static variables used to check whether debugging
 * is enabled are not protected with locks. In other words, if you
 * dynamicaly enable/disable debug logging, then some threads may still use
 * the old setting. To be on the safe side, enable debugging before doing
 * the <code>connect()</code> call.
 * 
 * @param enable
 *            on/off
 * @param logger
 *            a {@link DebugLogger DebugLogger} instance, <code>null</code>
 *            means logging using the simple logger which logs all messages
 *            to to stderr. Ignored if enabled is <code>false</code>
 */
public synchronized void enableDebugging(boolean enable, DebugLogger logger)
{
	Logger.enabled = enable;

	if (enable == false)
	{
		Logger.logger = null;
	}
	else
	{
		if (logger == null)
		{
			logger = new DebugLogger()
			{

				public void log(int level, String className, String message)
				{
					long now = System.currentTimeMillis();
					System.err.println(now + " : " + className + ": " + message);
				}
			};
		}
	}
}
 

import com.trilead.ssh2.log.Logger; //导入依赖的package包/类
/**
 * Enable/disable debug logging. <b>Only do this when requested by Trilead
 * support.</b>
 * <p>
 * For speed reasons, some static variables used to check whether debugging
 * is enabled are not protected with locks. In other words, if you
 * dynamicaly enable/disable debug logging, then some threads may still use
 * the old setting. To be on the safe side, enable debugging before doing
 * the <code>connect()</code> call.
 * 
 * @param enable
 *            on/off
 * @param logger
 *            a {@link DebugLogger DebugLogger} instance, <code>null</code>
 *            means logging using the simple logger which logs all messages
 *            to to stderr. Ignored if enabled is <code>false</code>
 */
public synchronized void enableDebugging(boolean enable, DebugLogger logger) {
	Logger.enabled = enable;

	if (enable == false) {
		Logger.logger = null;
	} else {
		if (logger == null) {
			logger = new DebugLogger() {

				@Override
				public void log(int level, String className, String message) {
					long now = System.currentTimeMillis();
					System.err.println(now + " : " + className + ": "
							+ message);
				}
			};
		}

		Logger.logger = logger;
	}
}
 

import com.trilead.ssh2.log.Logger; //导入依赖的package包/类
/**
 * Enable/disable debug logging. <b>Only do this when requested by Trilead
 * support.</b>
 * <p>
 * For speed reasons, some static variables used to check whether debugging
 * is enabled are not protected with locks. In other words, if you
 * dynamicaly enable/disable debug logging, then some threads may still use
 * the old setting. To be on the safe side, enable debugging before doing
 * the <code>connect()</code> call.
 * 
 * @param enable
 *            on/off
 * @param logger
 *            a {@link DebugLogger DebugLogger} instance, <code>null</code>
 *            means logging using the simple logger which logs all messages
 *            to to stderr. Ignored if enabled is <code>false</code>
 */
public synchronized void enableDebugging(boolean enable, DebugLogger logger)
{
	Logger.enabled = enable;

	if (enable == false)
	{
		Logger.logger = null;
	}
	else
	{
		if (logger == null)
		{
			logger = new DebugLogger()
			{

				public void log(int level, String className, String message)
				{
					long now = System.currentTimeMillis();
					System.err.println(now + " : " + className + ": " + message);
				}
			};
		}

		Logger.logger = logger;
	}
}