Input system variables and run parameters in eclipse--go to

Original address: http://chenzhou123520.iteye.com/blog/1931670

At development time, it may be necessary to set different system parameters depending on the environment, and we all know that we can use the-d parameter to set runtime system variables when using the Java-jar command, and how do we set the system variable when running Java programs in eclipse?

In addition, if our program needs to enter a running parameter, how is it configured in eclipse?

The answer is simple, as follows:

Right-click Run As-->run configurations on the class you want to run ...

In the pop-up screen, click Arguments

Then the following screen appears:

1. In the Program arguments column, you can enter the parameters required for the application to run, that is, the parameters of the main method, if the parameters are multiple, separated by a space.

2.VM arguments receives the system variable parameter, the system variable input format is:-dargname=argvalue, similarly, the multiple parameters are separated by a space. In addition, if there are spaces in the middle of the parameter values, enclose them in quotation marks

The sample program code is as follows:

Java code

2. /**
4. * Classname:main <br/>
6. * Function:eclipse System variables and operating parameters. <br/>
8. * date:2013-8-27 pm 04:06:09 <br/>
10. *
12. * @author [email protected]
14. * @version
16. */
18. Public class Main {
20. public static void Main (string[] args) {
22. System.out.println ("Print all Parameters:");
24. if (args.length>0) {
26. For (int i=0;i<args.length;i++) {
28. System.out.println ("+i+"parameters are: "+args[i]);
30. }
32. }
34. System.out.println ("Print system variable:");
36. String env = System.getproperty ("service.env");
38. System.out.println ("service.env:" +env);
40. String LogPath = System.getproperty ("Logfile.path");
42. System.out.println ("Logfile.path:" +logpath);
44. }
46. }

To run the program, the console output is as follows:

Console code

1. print all parameters:   
2. 0 parameters are:chenzhou   
3. 1 parameters are: chenzhou2  
4. 2 parameters are: chenzhou3  
5. Print system variable:   
6. service.env:dev  
7. Logfile.path:e:\u03\project\logs