Answer:
Option d is the correct answer for the above question
Explanation:
- The above question asked about the result of the above question code, which has the query of two tables and their primary key is matched in the where class.
- The Customer_T table has a primary key "CustomerID" and the Order_T has a foreign key "Customer_ID" and that both are matched in the where clause.
- So the above query fetches that result in which the records match both the table. Hence Option d is the correct answer for the above question while the other is not because another option is not to get by the result of the above query.
Answer:
C. sqrt(Math)
Explanation:
All but one of options A to E are is not a static method.
Only option C is a static method. The sqrt() is a static method of Math, that can always be used as Math.sqrt() is used;
The Math class defines all of its methods to be static. Invoking Math methods is done by using Math as a method rather than a variable of type Math; this means that sqrt(Math) doesn't rely on instance variables and don't need to be overridden, unlike others.
Lastly, sqrt(Math) is a static method because unlike other options, it is an utility method, and it is relevant to computations on primitive data types.
The purpose of the static method is in large part to offer a standard library of functions, and it doesn't need to be applied directly to an object.
Answer:
The correct answer to this question is given below in the explanation section.
Explanation:
The correct answer to this question is : 4.
When you run this program in Java. The output produce by this program is 4
The given code is:
import java.util.ArrayList;
public class arrayList7
{
public static void main(String[] args) {
ArrayList one = new ArrayList ();
Integer count=3;
count=count+1;
one.add(2);
one.add(count);
System.out.println(one.get(1));
}
}
This code store the value in ArrayList one variable. It first adds 2 at zero indexes and 4 at first index. When you print the value at index one, you will get the output 4. because the count variable contains 4. If you want to print 2, then you specify the print statement that prints the value at index zero. eg.
System.out.println(one.get(0));
