How do I fix a compilation error for unhandled exception on call to Thread.sleep()?

Question

I am new to Java and kind of new to programming (I know diving straight into Java probably wasn\'t the greatest idea.) and I\'ve been getting an error consistently no matter

Answer 1

Thread.sleep can throw an InterruptedException which is a checked exception. All checked exceptions must either be caught and handled or else you must declare that your method can throw it. You need to do this whether or not the exception actually will be thrown. Not declaring a checked exception that your method can throw is a compile error.

You either need to catch it:

try {
    Thread.sleep(1000);
} catch (InterruptedException e) {
    e.printStackTrace();
    // handle the exception...        
    // For example consider calling Thread.currentThread().interrupt(); here.
}

Or declare that your method can throw an InterruptedException:

public static void main(String[]args) throws InterruptedException

Related

• Lesson - Exceptions
• When does Java's Thread.sleep throw InterruptedException?
• Java theory and practice: Dealing with InterruptedException

Answer 2

You can get rid of the first line. You don't need import java.lang.*;

Just change your 5th line to:

public static void main(String [] args) throws Exception