How i understand checked and unchecked exceptions.

Question

example of unchecked exception-
public class Unchecked{
public static void main(String[] args){
int a = 9;
int b = 0;
System.out.println(a/b);
}
}
this code will complile but will throw an error when running. thats unchecked exception.

checked exceptions-
example of checked exceptions
public class Checked{
public static void main(String[] args){

Thread.sleep(1000);

}
}
this code will not compile unless we surrounded the thread.sleep(1000);
with a try catch block. like this-
public class Checked{
public static void main(String[] args){
try{
Thread.sleep(1000);
}
catch(Exception e){
}
}
}
thats checked exception.
did i get it wrong plis comment.

Answer 1

You are correct.
Checked exceptions prevent the compilation of the program.
With unchecked exceptions the program will still compile but the error will occur at runtime.
Additional clarification:
https://www.tutorialspoint.com/Checked-vs-Unchecked-exceptions-in-Java