ADVERTISEMENT
ADVERTISEMENT

Java find output programs (Data Types) | set 1

Find the output of Java programs | Data Types | Set 1: Enhance the knowledge of Java Data Types concepts by solving and finding the output of some Java programs.
Submitted by Nidhi, on January 29, 2021

Question 1:

public class MainClass {
  public static void main(String[] args) {
    int Len = 0;
    int A = 100;

    Len = sizeof(int);
    System.out.println("Len : " + Len);

    Len = sizeof(A);
    System.out.println("Len : " + Len);
  }
}

Output:

MainClass.java:6: error: '.class' expected
    Len = sizeof(int);
                    ^
1 error

Explanation:

The above program will generate syntax error because sizeof() operator is not exist in Java.

Question 2:

public class MainClass {
  public static void main(String[] args) {
    System.out.println(Long.SIZE);
    System.out.println(Double.SIZE);
    System.out.println(Integer.SIZE);
  }
}

Output:

64
64
32

Explanation:

In the above program, we created a class MainClass that contains a main() method, which is the entry point for the program. Here, we used SIZE constant of Long, Double, and Integer class. The SIZE constant contains the size of specified class in bits. The size of Long is 64 it means 8 bytes.

Here, we used the println() method to print the values on the console screen.

Question 3:

public class MainClass {
  public static void main(String[] args) {
    Long A = 234;
    Double PI = 3.14;

    System.out.println(A.SIZE);
    System.out.println(PI.SIZE);
  }
}

Output:

MainClass.java:3: error: incompatible types: int cannot be converted to Long
    Long A = 234;
             ^
1 error

Explanation:

The above program will generate syntax error because we cannot use SIZE constant with variables.

Question 4:

public class Main {
  public static void main(String[] args) {
    unsigned short A = 234;
    int B = 254;
    int C = 0;

    C = A * 10 + B - A;

    System.out.println(C);
  }
}

Output:

Main.java:3: error: not a statement
    unsigned short A = 234;
    ^
Main.java:3: error: ';' expected
    unsigned short A = 234;
            ^
2 errors

Explanation:

The above program will generate syntax error because unsigned short is not built-in data type in java.

Question 5:

public class Main {
  public static void main(String[] args) {
    short A = 234;
    int B = 254;
    int C = 0;

    C = A * 10 + B - A;

    System.out.printf("C : %d", C);
  }
}

Output:

C : 2360

Explanation:

In the above program, we created a class Main that contains a main() method, which is the entry point for the program. In the main() method, we created three local variables A, B, and C initialized with 234, 254, and 0 respectively.

Now evaluate the expression:

C = A*10+B-A;
C = 234*10+254-234;
C = 2340+254-234;
C = 2360

Here, we used printf() method to print the value of C in formatted manner.



ADVERTISEMENT




ADVERTISEMENT


Comments and Discussions!

ADVERTISEMENT

ADVERTISEMENT

ADVERTISEMENT

ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT

Languages: » C » C++ » C++ STL » Java » Data Structure » C#.Net » Android » Kotlin » SQL
Web Technologies: » PHP » Python » JavaScript » CSS » Ajax » Node.js » Web programming/HTML
Solved programs: » C » C++ » DS » Java » C#
Aptitude que. & ans.: » C » C++ » Java » DBMS
Interview que. & ans.: » C » Embedded C » Java » SEO » HR
CS Subjects: » CS Basics » O.S. » Networks » DBMS » Embedded Systems » Cloud Computing
» Machine learning » CS Organizations » Linux » DOS
More: » Articles » Puzzles » News/Updates

© https://www.includehelp.com some rights reserved.