I know that this Question is repeated but I can’t find the answer in the Internet. I want to call a method from another class. I have Class1 and Class2. In Class 2 I have this method: I want to call the above method from Class1. Thanks for any answer. —-EDIT—- —-LogCat— Answer Yo…
How to insert a MongoDB document with a timestamp from the database server
In Oracle, I could simply do this: That would insert two values into myTable, and one of them would be a timestamp based-on the database server’s time. For MongoDB (via the Java driver) I’ve tried this: But that creates a timestamp based-on the client machine’s time, not the database server&…
What is the Simplest Way to Reverse an ArrayList?
What is the simplest way to reverse this ArrayList? Answer Example (Reference):
How to execute the “if” and “else” at the same time?
Interesting problem: Change if statement and print out “Hello World” My solution is to add “!System.out.println(“Hello”)” in the if statement,But it doesn’t work, any ideas? UPDATE: I think this works: In C: Answer Tadaaaa:
Spring 3.1 HandlerInterceptor Not being called
I followed the documentation for HandlerInterceptors. Noting that in the new version of Spring: “the configured interceptor will apply to all requests handled with annotated controller methods”. The following is in an xml configuration file: I have an annotated controller beginning like this: When…
ProcessBuilder gives a “No such file or directory” on Mac while Runtime().exec() works fine
I have an application, running on the Playframework, which needs to encode some video files. I used for this (and it works perfectly), but as I need both, the output stream and the error stream, I am trying to use ProcessBuilder (as is also recommended). But I cannot get it to work (testing on a MacBook). Is …
How to override toString() properly in Java?
Sounds a little stupid, but I need help on my toString() method and it is very irking. I tried looking up online because the toString is the one where it is screwing up and “not finding Kid constructor #2” even though it is there and I would even do something else and it doesn’t work. Ok tha…
Loop through Months in Java / Android
I want to loop through months of the year and print out. for example: 01/2012 02/2012 03/2012 04/2012 etc… Here is my code: It is printing out in int’s 1 2 3 4 5 However, when I convert it to a date string, as seen in code above, it does this: 05/2012 06/2012 08/2012 11/2012 03/2013 08/2013 Basica…
DBCP – validationQuery for different Databases
I use DBCP pool and I want use testOnBorrow and testOnReturn to test if connection is still valid. Unfortunately I have to set property validationQuery to make it work. Question: What value should be in validationQuery? I know, that: validationQuery must be an SQL SELECT statement, that returns at least one r…
java RMI – unexpected error
I have been working on to create a sample RMI project for a while and having difficulty with the following error for a few hours now. If anyone of you can point me towards my mistake, I will be grateful. I will be posting the trimmed code with the error. Thanks in advance for your time. PrimeFinder.java Prime…