java 实例化异常_如何处理实例化类对象时发生的异常

java version "1.7.0_45"

你好

我正在构造函数中初始化类方法.但是,新URL(uploadUrl)将在构造函数中引发异常.因此,如果发生这种情况,用户应该无法继续.由于构造函数无法返回任何内容,我想知道这是处理此问题的最佳方法吗？

非常感谢任何建议,

public class MultipleFileTransfer {

private static final String TAG = MultipartUtility.class.getSimpleName();

private DataOutputStream dataOutputStream;

private FileInputStream fileInputStream;

private HttpURLConnection httpURLConnection;

private URL url;

public MultipleFileTransfer(final String uploadUrl) {

dataOutputStream = null;

fileInputStream = null;

httpURLConnection = null;

try {

url = new URL(uploadUrl);

} catch (MalformedURLException e) {

Log.wtf(TAG, e.getMessage()); /*

}

}

/* Factory method that initializes the class methods and returns the class object */

public static MultipleFileTransfer getInstance(final String uploadUrl) {

/* Check that a valid url has been entered correctly */

if(!URLUtil.isValidUrl(uploadUrl)) {

Log.wtf(TAG, "Invalid url: " + uploadUrl);

return null;

}

return new MultipleFileTransfer(uploadUrl);

}

}