August 2005
Beginner to intermediate
130 pages
2h 30m
English
Content preview from Eclipse IDE Pocket Guide
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Setting Breakpoints
A breakpoint is a marker you place on a line of code where you want the debugger to pause execution. To set one, double-click in the gutter area to the left of the source line. For this example, we want to stop on the System.out.println() call, so double-click in the gutter next to that line. A breakpoint indicator will appear, as shown in Figure 17.
Figure 4-1. Set a breakpoint by double-clicking to the left of the source line.
Now, press F11 and Eclipse will run your program again in debug mode. The breakpoint indicator will change when the class is loaded, and the debugger will stop at the line where you added the breakpoint.
Tip
One of the nice things about breakpoints in Eclipse is that they stay with the line even if the line number changes (e.g., due to code being added or removed above it).
When the breakpoint is reached and the program stops, you'll notice several things. First, Eclipse will switch to the Debug perspective. If you see a dialog asking to confirm the perspective switch, select "Remember my decision" and click Yes.
Tip
Using one perspective for coding and another for debugging is optional, but some people like being able to customize their window arrangement for each task. You can disable this switching in the Run/Debug preferences (Window → Preferences → Run/Debug).
Next, several new views will open—most importantly, the Debug view (see Figure 18 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.