How to print out value of a variable during debugging in Netbeans?

Question

In xcode during debugging, it is possible to print out the value of a variable at that particular stage. I was just wondering if there is a similar function in Netbeans? If not, what Java IDE does?

Answer 1

Have you tried the following methods:

Put a breakpoint on the line where you want to see the value. Run the debugger on that file and switch to the 'Variables' tab (Window > Debugger > Variables). This will display the values of your variables at that breakpoint. These rows might also have children rows - eg. If there was an array named myArray, you can click on the + symbol next to it to see each elements value.

You can also evaluate conditionals by going 'Debug' > 'Evaluate Expression'. For example, in the iterating loop over 'myArray', you could enter myArray[2] == 5 and click the green -> arrow to evaluate this. If the value of that element was 5, this would indicate the expression, type (boolean in this example), and output of that test.

OR

• Insert your breakpoint wherever you'd like to monitor the variable.

• Right-click the breakpoint and select 'Breakpoint > Properties'.

• Set the suspend to "No thread (continue)".

• Then just fill in the corresponding field with the format of {=<variable name>}. So, for example entering: "myVar value @ L30 is: {=myVar}" will output "myVar value @ L30 is: 1" to the debugger console.

You shouldn't need to recompile. Just run under the debugger and switch to the console output.

Answer 2

Set breakpoint and use the 'PO' keyword to print the variable.

ex: `NSString *string=@"String to print";`   in your code

if want to print this string in debugging mode, just you need to put breakpoint in front of this line and type Po string in log panel.