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How to repeat the program without running it

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I was looking around but there isn't very much solid information for JAVA, I am trying to create a scanner question that asks if the user wants to restart the program, like "would you like to restart? Yes/No" kinda thing, does anyone have an idea or code that I can learn from? I want the program to run lines from ex. 3-50. I don't want the code to go ex. 1,2,3,4,5,6 etc. If the user says yes the program will re-run itself and all the scanners in between

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you could use a for or while loop. for your purpose, you would probably want to use the 'while' loop. here is an example of the code:
while(var i=0) {
var ask= prompt("want to repeat?");
if(ask='yes') {
//you put nothing here lol
else {
//and then it stops repeating because i is no longer 0