java
Cannot resolve method in java
Make sure your container (using generics) holds the Question type: That way JAVA knows which method to call.
Median of Medians in Java
I don’t know if you still need this problem solved, but http://www.ics.uci.edu/~eppstein/161/960130.html has an algorithm: Good luck!
Displaying Image in Java
Running your code shows an image for me, after adjusting the path. Can you verify that your image path is correct, try absolute path for instance?
mongoDB, connection refused
By default MongoDB only binds to the loopback interface which makes it only accessible from localhost. To change that you need to edit this line in mongod.conf file; you can change it to bind_ip = 127.0.0.1,192.168.1.102 to allow LAN and local connections or you can remove or comment out that line to allow all connections. For more info : MongoDB … Read more
Getting java.sql.SQLException: Operation not allowed after ResultSet closed
The problem is with the way you fetch data in getStuff(). Each time you visit getStuff() you obtain a fresh ResultSet but you don’t close it. This violates the expectation of the Statement class (see here – http://docs.oracle.com/javase/7/docs/api/java/sql/Statement.html): By default, only one ResultSet object per Statement object can be open at the same time. Therefore, if the reading of one ResultSet object is … Read more
StringIndexOutOfBoundsException String index out of range: 0
The problem occurs when line is empty (e.g. “”). Then it doesn’t have a character at index 0, hence your error. To fix, you can check the length of line before you use charAt:
ReferenceError: “alert” is not defined
alert is not part of JavaScript, it’s part of the window object provided by web browsers. So it doesn’t exist in the context you’re trying to use it in. (This is also true of setInterval, setTimeout, and other timer-related stuff, FYI.) If you just want to do simple console output, Rhino provides a print function to your script, so you could replace alert with print. … Read more
Implementing an actionlistener to a JTextField
From what you’ve provided, it looks like you’ve imported or implemented a class other than java.awt.event.ActionListener named, ActionListener (class name conflict). Try qualifying the parameter as java.awt.event.ActionListener:
Java Copy Constructor ArrayLists
Note: Cloning the lists, isn’t the same as cloning the elements in the list. None of these approaches work the way you want them to: The approaches above will fill people such that it contains the same elements as other.people. However, you don’t want it to contain the same elements. You want to fill it with clones of … Read more