Answer:
see explaination for program code
Explanation:
interface Runner
{
public abstract void run();
}
class Machine implements Runner
{
public void run()
{
System.out.println("Machine is running");
}
}
class Athlete implements Runner
{
public void run()
{
System.out.println("Athlete is running");
}
}
class PoliticalCandidate implements Runner
{
public void run()
{
System.out.println("Political Candidate is running");
}
}
class DemoRunners
{
public static void main (String[] args)
{
Machine m = new Machine();
m.run();
Athlete a = new Athlete();
a.run();
PoliticalCandidate pc = new PoliticalCandidate();
pc.run();
}
}
The best thing to do when an error message appears when it is not supposed to, as in if you are blocked by an administrator and it appears then its supposed to, it is best to contact someone who can investigate whether or not something is happening to your computer. That could be a parent, if they are good with computers, or just tech support at a store, provided they also know computers. Most of the time your computer just makes a mistake so nothing to worry about, but make sure to have it checked just to be sure.
Answer:
for(var i=0; i<3; i++) {
penUp();
moveTo(100,120);
turnTo(180);
penDown();
moveForward(25);
}
Explanation:
The i variable is the loop dummy. The code block will be executed 3 times.
Answer:
The energy consumption of LCD only varies depending on the backlight setting. A basic LED LCD with its backlight set low will draw less power than OLED. The only way to make OLED more energy-efficient is to reduce its brightness, but since that reduces its contrast ratio as well, it's not ideal.
I assume you are comparing OLED to LCD's, if not please write a clearer question.
