Java Basic Input & Output Aptitude Questions and Answers

This section contains Aptitude Questions and Answers on Java Basic Input Output, Declaration etc.

List of Java Basic I/O Aptitude Questions

1) What will be the output of following program ?

public class Prg {
	public static void main(String args[]){
		System.out.print('A' + 'B');
	}
}

Answer

2) What will be the output of following program ?

public class Prg {
	public static void main(String args[]){
		System.out.print("A" + "B" + 'A');
	}
}

Answer

3) What will be the output of following program?

public class Prg {
	public static void main(String args[]){
		System.out.print(20+ 1.34f + "A" + "B");
	}
}

Answer

4) What will be the output of following program?

public class Prg {
    public static void main(String[] args) {
        char [] str={'i','n','c','l','u','d','e','h','e','l','p'};
        System.out.println(str.toString());
    }
}

Answer

5) What will be the output of following program?

public class prg {
    public static void main(String[] args) {
        System.out.print("Hello");
        System.out.println("Guys!");
    }
}