day 9-exception handling

What is wrong in the following program?

class Test {
   public static void main (String[] args) {
     try {
       System.out.println("Welcome to Java");
      }
   }
}

• You cannot have a try block without a catch block.

• You cannot have a try block without a catch block or a finally block.

• A method call that does not declare exceptions cannot be placed inside a try block.

• Nothing is wrong.

What is displayed on the console when running the following program?

class Test {
   public static void main (String[] args) {
     try {
       System.out.println("Welcome to Java");
     }
     finally {
       System.out.println("The finally clause is executed");
     }
   }
}

• Welcome to Java

• Welcome to Java followed by The finally clause is executed in the next line

• The finally clause is executed

• None of the above

What is the result of executing the following code, using the parameters 4 and 0:

 

public void divide(int a, int b) {

try {

int c = a / b;

} catch (Exception e) {

System.out.print("Exception ");

} finally {

System.out.println("Finally");

}

• Prints out: Exception Finally

• Prints out: Finally

• Prints out: Exception

• No output

The class java.lang.Exception

• is public

• implements Throwable

• extends Throwable

• is serializable

Which of these is a legal definition of a method named m assuming it throws IOException, and returns void. Also assume that the method does not take any arguments. Select the one correct answer.

• void m() throws IOException{}

• void m() throw IOException{}

• void m(void) throws IOException{}

• m() throws IOException{}

• void m() {} throws IOException