java.lang.ArrayIndexOutOfBoundsException: 2 [duplicate]
I’m trying to connect java to sql. Though I’m a newbie with javam I can’t seem to find out why. Can you help me and give me idea how to figure it out?
java
Java Swing setting JPanel Size
This may not answer your immediate question…but… You set the layout as a GridLayout, but you are using BorderLayout constraints to apply one of the components?? Also, make sure that there are not calls to Test#pack else where in your code, as this will override the values of setSize UPDATED (from changes to question) Remember, … Read more
Return outside method error
From your comment response above, I am going to make the educated guess that you believe that defines a Java method called openingboard. This isn’t the case. Java follows the C paradigm of requiring you to specify your parameters in parentheses, regardless of whether you have any parameters or not. So, the method is a valid … Read more
SQL Developer with JDK (64 bit) cannot find JVM
I just wasted one morning trying to get SQL developer to work on my current setup: OS: Windows 8.1 virtual machine running on mac via Parallels. No oracle client or instant client installed No Java installed The reproducible steps are I downloaded SQL Developer for Windows with JDK (all 64-bit) and unzipped it to C:/Program … Read more
toring and Retrieving ArrayList values from hashmap
Our variable: To store: To add numbers one and one, you can do something like this: In Java 8 you can use putIfAbsent to add the list if it did not exist already: Use the map.entrySet() method to iterate on:
Queue vs Dequeue in java
Deque is short for “double ended queue”. With an ordinary queue, you add things to one end and take them from the other. With a double ended queue, you can add things to either end, and take them from either end. That makes it a bit more versatile; for example, you could use it as … Read more
Error message ‘Cannot be resolved or is not a field’
Right now I’m studying the chain of responsibility design pattern and am using Eclipse. And I’m trying to compile this code, but I have the compiling error “isLast cannot be resolved or is not a field”: And now, here is the interface:
Java Console Prompt for ENTER input before moving on [duplicate]
The reason why System.in.read is not blocking the second time is that when the user presses ENTER the first time, two bytes will be stored corresponding to \r and \n. Instead use a Scanner instance:
How can I set size of a button?
The following bit of code does what you ask for. Just make sure that you assign enough space so that the text on the button becomes visible The X and Y (two first parameters of the GridLayout constructor) specify the number of rows and columns in the grid (respectively). You may leave one of them … Read more
how to convert exe file to .jar file? [duplicate]
Possible Duplicate:How can I extract java exe to jar Is there a way to convert exe to jar file? for example i have an exe file that was written with java first, then i convert to jar file then exe file. Can i convert it back to jar file? I understand that java programs can … Read more