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Java Java Basics Perfecting the Prototype Looping until the value passes

Sean Walker
Sean Walker
1,792 Points
Posted by Sean Walker
Sean Walker
1,792 Points

Syntax error in do while loop

Hey everyone,heeeeeeeeeeeeeeeeeeelp me! :)) i'm really confused about this do while loop...pls tell me what to do to fix my code...thanks!

Example.java 
// I have initialized a java.io.Console for you. It is in a variable named console.
String response = console.readLine("do you understand do while loops?  ");
do {
  if (response.equals("no")) 
} while String response = console.readLine("do you understand do while loops?  ");

1 Answer

Krishna Pratap Chouhan
Krishna Pratap Chouhan
15,203 Points

There is a way in which do-while loop works(similar for while loop).

There are 2 things to note:

1:> DO{ do some tasks; }WHILE (till this condition satisfies);

2:> Every sentence in java ends with a semi-colon(;)

Now lets see the code:

//Lets create a variable called response
String response ;

//Now lets ask for response and if response in "No", we continue asking;
do {
  //asking for response from user
  response = console.readLine("do you understand do while loops?  ");
} while (response.equals("No"));
//after while is a semi-colon

Hope this helps.

Krishna Pratap Chouhan
Krishna Pratap Chouhan
15,203 Points

Also, it is worth noting that first "do" block runs and then check for condition. If condition satisfies then it run again otherwise it stops.

So unlike "for" and "while" loop, "do-while" always runs at least once.