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Java Java Basics Perfecting the Prototype Looping until the value passes

Neelesh Tewani
Neelesh Tewani
1,239 Points
Posted by Neelesh Tewani
Neelesh Tewani
1,239 Points

i am not able to understand the do while loop

String response; do{ response = console.readLine("Do you understand do while loops ?"); if(response.equals("yes")||response.equals("no")){ response = console.readLine("Do you understand do while loops ?"); } }while(response.equals("yes")||response.equals("no")); System.exit(0);

4 Answers

Konrad Pilch
Konrad Pilch
2,435 Points
Konrad Pilch
Konrad Pilch
2,435 Points

Do While loop basically means that for example:

From 9am to 5pm , my boss will pay me 100dollars per hour.

So WHILE im in the work from 9am to 5pm, five me ( DO ) 100 dollar each hour. After 5pm , stop giving it and break the loop. Next day from 9am to 5pm, activate WHile Loop.

I hope this helps. If you mean that.

Grigorij Schleifer
Grigorij Schleifer
10,365 Points
Grigorij Schleifer
Grigorij Schleifer
10,365 Points

Hey Neelesh,

here is a schematic view of a do/while loop

do{
//here comes your code you want to be executed at least once
//this is also the loop part 
} while(//here comes your condition, it can be true or false, depending on what you are supposed to do, if its true  - the loop will be executed);

The challenge should look like this:

String response; //in this String variable the user input will be stored/assignet 

do { 
response = console.readLine("Do you understand do while loops?"); //the answer of the user will be stored/assigned from console into "response"
  } while(response.equalsIgnoreCase("no")); //while the answer is no or No, the condition is true and the loop goes on, if the condition is false (Yes) the loop stops

I hope it helps ...

Grigorij

Eredis Gutierrez
Eredis Gutierrez
6,531 Points
Eredis Gutierrez
Eredis Gutierrez
6,531 Points

Hey Neelesh,

A Do while loop does something while the expression is valid.

For example.

int stopwatch = 30;

do {
stopwatch++; //Increments by 1 every time it loops
System.out.println("Stopwatch is at " + stopwatch);
} while (stopwatch < 5) {

}

If you are still having trouble, I recommend for you to look at the Java Docs, They have excellent documentation.

Do While Java Docs

Neelesh Tewani
Neelesh Tewani
1,239 Points
Neelesh Tewani
Neelesh Tewani
1,239 Points

i want help in solving this problem which i have posted before please help me this