level 1 : 10 Step by step interview question to crack the interview.

1. Why variables are called as container ? And what it can hold?
2. Do variable has its type ?
3. Can we call a variable an identifier ?
4. Where we can define variable in our class ?
5. Which is invalid variable definition ?
    a. call kr
    b. 123callkr
    c. callkr@javatilldate
6. can we use (_) is variable name ?
7. what is operator in java? what this expression mean x++ , ++x in java ?

8. what will be out of the below code ?

public class callkr {

public static void main(String[] args) {

       int a=25;

       System.out.println(a++);

       System.out.println(a--);

 }

9. what will be out of the below code ?

public class callkr {

public static void main(String[] args) {

       float f=10.5f;

       float f1=++f;

       System.out.println(f1);

       }

}

10. what will be out of the below code ?

public class callkr {

public static void main(String[] args) {

       int a=20;

    a= a++ + 1;

    System.out.println(a);

       }

}

11.what will be out of the below code ?

public class callkr {

public static void main(String[] args) {

       int a=20;

       a= a++ + a++;

    System.out.println(a);

 }

}

12. what will be out of the below code ?

public class callkr {

public static void main(String[] args) {

       int a=20;

       a= a-- - --a;

    System.out.println(a);

 }

}

13. what will be out of the below code ?

public class callkr {

public static void main(String[] args) {

       int a=20;

       a= a-- + ++a;

    System.out.println(a);

 }

}

14. what will be out of the below code ?

public class callkr {

public static void main(String[] args) {

    int x=21;

    String callkr = (x < 15) ? "important" : (x < 22)? "callkr" : "javatilldate";

    System.out.println(callkr);

}

}

15. what will be out of the below code ?

public class callkr {

public static void main(String[] args) {

       int x=100;

       int y=x-- --x;

       x=x+2;

    System.out.println(x);

}

}