Welcome to your Java MCQ Test
1.
What is file handling in java?
2.
Which method can be used to find the length of a string in Java?
3.
What will be the output of following Java code?
import java.util.Scanner;
class ThisKeyword {
private int a = 4;
private int b = 1;
void getSum(int a, int b) {
this.a = a;
this.b = b;
System.out.println(this.a + this.b);
}
}
public class Main {
public static void main(String args[]) {
ThisKeyword T = new ThisKeyword();
T.getSum(3, 5);
}
}
4.
Can we keep a different name for the java class name and java file name?
5.
What is the result of 10 + 20 + "Java" in Java?
6.
Which method deletes a file in Java?
7.
Which of the following is a superclass of every class in Java?
8.
Which of these is the correct method to create an array in java?
9.
How can we access methods for file handling in java?
10.
What is the default value of a boolean variable in Java?
11.
Can the Java program accept input from the command line?
12.
Static variables in java are declared as ___.
13.
What will be the output of following Java code?
public class Main {
public static void main(String[] args) {
String str = "Hello";
str = "Bye";
System.out.println(str);
}
}
14.
Which keyword in java is used for exception handling?
15.
Object in java are ___.
16.
What will be the output of following Java code?
import java.util.Scanner;
class ThisKeyword {
private int a = 4;
private int b = 1;
void getSum(int a, int b) {
this.a = a;
this.b = b;
System.out.println(this.a + this.b);
}
}
public class Main {
public static void main(String args[]) {
ThisKeyword T = new ThisKeyword();
T.getSum(3, 5);
}
}
17.
Which method in java is used to generate random numbers in Java?
18.
What will be the output of following Java code?
public class Main {
public static void main(String arg[]) {
int i;
for (i = 1; i <= 12; i += 2) {
if (i == 8) {
System.out.println(i);
break;
}
}
}
}
19.
What is stringBuffer in java?
20.
Which of the following can be declared as final in java?
