Select the class containing the main method in the package explorer. Right-click the selected class and click Run As -> Run Configurations as shown below:



When you click Run As -> Run Configurations, the dialog box shown below is displayed. Select the Arguments tab and click the Variables button in the Program arguments section:



When you click the Variables button, the dialog box shown below is displayed. Select string_prompt and click OK:



When you click the button OK, the dialog box shown below is displayed. Click Apply to save changes:



When you run your application, you will be prompted to enter command-line arguments in a dialog box as shown below: