Open a given URL in a new tab by clicking a button-how to read url from propertis file [closed]

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this is one button when i click on this button to open new tab and url but i want to read url from propertis file. When i click it will open in new window but how to read url from propertis file to jsp file

It will not working <button type="button" id="addButton" onclick="window.open('${url}','_blank')" class="btn btn-primary btn-sm btn-lightblue" title="Add">Add</button>