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Fixing an error

Errors are serious problems in the Java world. Sometimes they are created due to environmental problems beyond our control. Other times, we may write bad code that causes an Error. In this exercise, you will observe and then correct an application that will never terminate and cause an Error (specifically, a StackOverflowError). Seeing an Error will help you identify them in the future. Unlike exceptions, errors cannot be handled with try-catch or throws.

Cet exercice fait partie du cours

Data Types and Exceptions in Java

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Instructions

  • Run the Sample code as is where the cycles value never changes, which leads to an infinite loop of calls and causes the application to fail and generates an StackOverflowError.
  • After seeing the StackOverflowError, add + 1 to cycles in the call to doWork, causing the cycles value to change, which will stop the infinite loop of calls.
  • Rerun the code to see the application successfully run and avoid the StackOverflowError.

Exercice interactif pratique

Essayez cet exercice en complétant cet exemple de code.

public class ErrorGeneration {

	public static void main(String[] args) {
    	System.out.println("Started the work");
		doWork(0);
        System.out.println("Work complete");
	}

	public static void doWork(int cycles) {
		if (cycles < 10) {
            // Add +1 to cycles after running
			doWork(cycles);
		}
	}
}
Modifier et exécuter le code