You need the sleep method of the Thread class. public static void sleep (long time) Causes the thread which sent this message to sleep for the given interval of time (given in milliseconds). The precision is not guaranteed – the Thread may sleep more or less than requested. Parameters time The time to sleep in … Read more
Sometimes Java generics just doesn’t let you do what you want to, and you need to effectively tell the compiler that what you’re doing really will be legal at execution time. I usually find this a pain when I’m mocking a generic interface, but there are other examples too. It’s usually worth trying to work … Read more
I am trying to write a String validation to match any character (regular, digit and special) except =. Here is what I have written – But, it matches the input string “2009-09/09 12:23:12.5=” with the pattern. How can I exclude = (or any other character, for that matter) from the pattern string?
You could easily use String.replace():
Using the constructor BigInteger(String val) Translates the decimal String representation of a BigInteger into a BigInteger. Javadoc
You should add client option to your mysql-connector allowPublicKeyRetrieval=true to allow the client to automatically request the public key from the server. Note that allowPublicKeyRetrieval=True could allow a malicious proxy to perform a MITM attack to get the plaintext password, so it is False by default and must be explicitly enabled. you could also try … Read more
That my friend is an array of bytes. In JNI, [B is used to describe an array ([) of bytes (B). An array of ints is [I etc. You can get a bit more information on field descriptors here:JNI Types and Data Structures (Table 3-2 should be what you are looking for).
If input value can be in numeric form other than integer , check by If string value is being passed , use Integer.parseInt(string_var). Please ensure error handling using try catch in case conversion fails.
problem is not in the code, but you don’t have added the driver to your project!!! You have to add the *.jar driver to your project… Try putting this in your lib directory, then re-starting tomcat… problem is Class.forName(“com.mysql.jdbc.Driver”); it tries to load the driver, but it is not getting it, this is the reason … Read more
boolean can only be true or false because it’s a primitive datatype (+ a boolean variables default value is false). You can use the class Boolean instead if you want to use null values. Boolean is a reference type, that’s the reason you can assign null to a Boolean “variable”. Example: