Java-Flashcard for Boyz

Front

What will be the output of the following code?

System.out.println(10 / 3);

Back

3

Front

What is wrong with this variable declaration?

int 123num = 5;

Back

Variable names cannot start with a number

Front

What is the default value of an int variable in Java?

Back

0

Front

Find the Output:
public class Test {
static int count = 0;
Test() {
count++;
}
public static void main(String[] args) {
Test obj1 = new Test();
Test obj2 = new Test();
System.out.println(count);
}
}

Back

2

Front

Predict the Result:
int arr[] = {1, 2, 3, 4, 5};
System.out.println(arr[5]);

Back

ArrayIndexOutOfBoundsException

Front

What is the output of the following code?

String str = "Hello";
System.out.println(str.length());

Back

5

Front

What will be the result of the following code?

boolean flag = true;
if (flag) {
System.out.println("True");
} else {
System.out.println("False");
}

Back

True

Front

What is the output of this code snippet?

int x = 10;
int y = 20;
System.out.println(x + y)

Back

Error

Front

What will be the output of the following code?

String name = "Java";
System.out.println(name.toUpperCase());

Back

JAVA

Front

What is the result of the following expression?

int a = 5;
int b = 10;
System.out.println(a == b);

Back

false