Which of these is the wildcard symbol?

 We use wild character (_) to import package.

Which of these is not a member class of java.io package?

Following is an example of?

public int someName(int x, int z)

{

}

What is the process by which we can control the parts of program which can access the members of a class?

public class abekus

{  

public static void main(String[] args) {

String str = "4534.64";

Float a = Float.parseFloat(str);

System.out.println(a);

}

}

 ________ are created when an  abnormal situations are arised in our program. _________can be created by JVM or by our application code.

The process of defining a method in subclass having same name & type signature as a method in its superclass is

Statement 1-  Abstract class can be inherited 

Statement 2-   Every class containing abstract method must be declared abstract 

Statement 1-  Thread class is used to make a thread 

Statement 1-  Runnable class is used to make a thread 

Statement 1-  System class is used to make a thread