Answer:
2. <em>A reference of type A can be treated as a reference of type B</em> - False
Base class or its objects are not related to their derived class (or its objects).
Explanation:
class A {
int a;
public A() {
a = 7;
}
}
class B extends A {
int b;
public B() {
b = 8;
}
}
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1. <em>After the constructor for class B executes, the variable a will have the value 7 </em>- True.
When an object of a derived class is declared, the constructor of base class is called before the constructor of derived class (is called).
3. <em>Both variables a and b are instance variables </em>- True.
Classes can have instance, or member, variables and methods.
4.<em> After the constructor for class B executes, the variable b will have the value 8</em> - True.
When object of class B is declared, its constructor was called, which initialized variable b to 8.
Answer:
The wider channel bandwidth is efficient and good as it help in increasing the speed of the transmission. Due to the wider channel of the bandwidth it also lead to consuming less energy of the battery and make cost effective.
Due to the wider bandwidth, the number of clients can easily share and transfer the data in the channel and also make the transmission complete.
If the channel of the bandwidth is double then, the single transmission can easily carry more data. Hence, it also lead to double the speed of the transmission.
Answer:
- import java.util.Arrays;
- import java.util.Scanner;
-
- public class Main {
- public static void main(String[] args) {
- Scanner input = new Scanner(System.in);
- double distances [] = new double[7];
-
- for(int i=0; i < distances.length; i++){
- System.out.print("Input running distance for day " + (i+1) + ": ");
- distances[i] = input.nextDouble();
- }
-
- System.out.println(Arrays.toString(distances));
- }
- }
Explanation:
The solution code is written in Java.
Firstly, create a Scanner object to get user input for running distance (Line 6). Next, declare a distances array and set the array size to 7 because we intend to use this array to hold running distance for 7 days per week.
Next, use the for loop that run for 7 times to repeatedly prompt user to input running distance for each day and store each value to the array distances (Line 9 -12).
At last, display the array to console terminal (Line 14).
The farming of maize began in Mesoamerica in 6000 B.C.
The domestication of maize made the city of Tenochtitlan possible by providing the Aztecs the ability to feed millions. Unlike the corn that is known today, the early maize had tiny cobs but dramatically became bigger and more nutritious as time passed.
