Java Scanner and While loop question I try to prompt user to enter a postive number and if the user's input is negative, there should be a message saying enter a positive number otherwise if user enters quit the loop should break So I use scanner method nextLine to read what's user's input and cast it into double if user enters number However, I might've done it wrong as I keep getting an error message Also should I put another while loop within the while loop like what I've done below Library Java Javavirtua LMachines jdkT 8 0 161 3ak Contents Home bin java Enter a positive number type quit to exitl quit Exception in thread main java lang NumberFormatException For input string quit at sun misc FloatingDecimal readJavaFormatString(FloatingDecimal java 2043) at sun misc FloatingDecimal parseDouble(FloatingDecimaL java 110) at java Lang Double parseDouble (Double iava 538) at Random main(Random java 10) Process finished with exit code 1

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Question: Java Scanner and While loop question I try to prompt user to enter a postive number and if the user's input is negative, there should

Java Scanner and While loop question

I try to prompt user to enter a postive number and if the user's input is negative, there should be a message saying enter a positive number. otherwise if user enters "quit" the loop should break.

So I use scanner method nextLine to read what's user's input and cast it into double if user enters number. However, I might've done it wrong as I keep getting an error message. Also should I put another while loop within the while loop? like what I've done below.

Java Scanner and While loop question I try to prompt user to

enter a postive number and if the user's input is negative, there

Library/Java/Javavirtua LMachines/jdkT.8.0 161.3ak/Contents/Home/bin/java .. Enter a positive number; [type quit to exitl quit Exception in thread "main" java. lang.NumberFormatException: For input string: "quit" at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:2043) at sun.misc.FloatingDecimal.parseDouble(FloatingDecimaL.java:110) at java. Lang.Double. parseDouble (Double.iava:538) at Random.main(Random.java: 10) Process finished with exit code 1

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