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I recently started coding with Apex and have been utilizing the 'system.debug()' method. It helps me keep track of variables in my code by printing the variable in the 'debug log'. Now I am studying Java, and I was wondering if an equivalent method exists in Java. I would like to see what my variables are in certain parts of my code.
You can use a PrintStream, like System.out to call print or println in order to display your debug. You can also redirect System.out to file using setOut.
However, if you use an IDE and a debugger, you can create a breakpoint to the line that you wish to debug and let a debugger run until it reaches your line.
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How I can use this site result in my android app? I want send math expression to this site get answer in my app and display result to user?
You can actually code the relevant site as the required function. But if you want to use it, you can use it as a WebView and capture data about jsoup.
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So I'm trying to make an Android App that way I can make a lot of money.
But I need some symbols that I can't figure out how to create.
One of the symbols is # <-- How do I make this? I've been copying/pasting it the entire time.
Please help...
It should be SHIFT + 2 on a standard American Keyboard
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To set the default button to suppose jButton4 the following code has to be used: this.getRootPane().setDefaultButton(jButton4); But where to add this?
What all I tried:
I tried to add it in main function but it gave me an error, I tried to put it inside the button action performed block but it did not work, I tried to put it just before the main function it gave me an error.
Question: So where do I put this line of code so it works? I am using Netbeans GUI to make the program.
You could add this line everywhere you want to set the default button (a button click, where you create your UI etc.).
I think a nice place is where you create your UI elements.
In your case it would be, just after initComponents();
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Basically I've been set some work where I have to have 4 methods but I don't really understand how methods work. One of these methods basically has to print out two set statements that's it and I have no idea how to do it as most examples across the web deal with methods being used for maths and nothing as simple as printing out two lines for a title. Can anyone please help?
Method is just a way of extracting a piece of code and making it callable on demand. So if you print out two lines...
System.out.println("This is line 1");
System.out.println("This is line 2");
And you want to call it more than once, then you would extract it into a method.
private void myNewMethod()
{
System.out.println("This is line 1");
System.out.println("This is line 2");
}
Then call that method from anywhere in your program like so
myNewMethod();
These types of questions are off topic however as you need to demonstrate an understanding of your problem before we can help fix it.
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Is there a similar syntax to Java's .hasNext() method in Ruby? I've been trying to get inputs in one line and then making it as integers and getting the absolute value.
It sounds like you want to see if there are more elements left in an iteration. Ruby's equivalent to that is peek:
From the docs:
Returns the next object in the enumerator, but doesn’t move the internal position forward. If the position is already at the end, StopIteration is raised.
But, in Ruby we usually rely on each or map to walk an iterable collection. There's no "figuring out" whether there's another element remaining, because Ruby does that for us.
ansh0l is right, gets is the most likely equivalent to hasNext() assuming that you're reading from the keyboard or any other I/O stream.