Answer:
Explanation:
The following code is written in Java. It is hard to fully create the code without the rest of the needed code including the T class and the Measurable interface. Regardless the following code can be implemented if you have that code available.
public static T minmax(ArrayList<T> mylist) {
T min = new T();
T max = new T();
for (int x = 0; x < mylist.size(); x++) {
if (mylist.get(x) > max) {
max = mylist.get(x);
} else if (mylist.get(x) < min) {
min = mylist.get(x);
}
}
return (min, max);
}
Answer:- Major property of a good hash code is that objects which are equal should return the same hash code .
Explanation: Hash codes is a numeric value which is used for identify a object while a equality testing .Hash code can occupy the value of any length and then returns a fixed length value. The value of hash codes are variable.
If two objects are equal then by the method of equal(object) if the hashcode() function is called on both the objects , they produce the same value.
Answer:
import java.util.*;
import java.text.*;
class CreditCardBill
{
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
NumberFormat defaultFormat = NumberFormat.getCurrencyInstance(Locale.US);
System.out.println("CS Card International Statement");
System.out.println("===============================");
System.out.print("Previous Balance: $");
double prevBalance = sc.nextDouble();
System.out.print("Additional Charges: $");
double addCharges = sc.nextDouble();
double interest;
if(prevBalance == 0)
interest = 0;
else
interest = (prevBalance + addCharges) * 0.02;
System.out.println("Interest: "+defaultFormat.format(interest));
double newBalance = prevBalance + addCharges + interest;
System.out.println("New Balance: "+defaultFormat.format(newBalance));
double minPayment;
if(newBalance < 50)
minPayment = newBalance;
else if(newBalance <= 300)
minPayment = 50.00;
else
minPayment = newBalance * 0.2;
System.out.println("Minimum Payment: "+defaultFormat.format(minPayment));
}
}
Answer:
d. public myClass( ) {. . .}
Explanation:
A constructor is a special method that is called when an object of a class is created. It is also used to initialize the instance variables of the given class. A class may have one or more constructors provided that these constructors have different signatures. A class that does not have a constructor explicitly defined has a default parameterless constructor.
Having said these about a constructor, a few other things are worth to be noted by a constructor.
i. In Java, a constructor has the same name as the name of its class.
For example, in the given class <em>myClass</em>, the constructor(s) should also have the name <em>myClass</em>.
ii. A constructor does not have a return value. It is therefore wrong to write a constructor like this:
<em>public void myClass(){...}</em>
This makes option a incorrect.
iii. When a constructor with parameters is defined, the default parameterless constructor is overridden. This might break the code if some other parts of the program depend on this constructor. So it is advisable to always explicitly write the default parameterless constructor.
This makes option d a correct option.
Other options b and c may also be correct but there is no additional information in the question to help establish or justify that.
They were designed for batch processing.
Explanation
In the beginning, around the 1940s, electronic computers were built without Operating systems. These computers could not do basic calculations, read and write data, or run programs. Setbacks such as these led to the development of operating systems.
The first one was introduced in the early to mid-1950, and it relied on the batch processing systems to facilitate submission of data into groups. Rather than processing tasks individually, this system processed tasks in batches. Upon the completion of a job, the batch would head over to the OS’s software. The software would then dump the state of the active task and open the next one. This helped reduce operator intervention and time wastage.
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