Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Transcribed Image Text:preLabC.java
1
import java.util.Random;
2 import java.util.StringJoiner;
3
4 public class preLabC {
5
6-
7
8
9
10
11
12
13
~45608192023
Y
17
23 }
public static int myMethod(MathVector inputVector) {
int valueAt5th Position -100000; // default value for integer
System.out.println("here is the contents object, inputVector: + inputVector);
// extract the value at the fifth position of the array in the object
// Remember: the count starts at 0. So the 5th position has an in
}
System.out.println("This is the value at position 5:
// return the integer value found at position 5 of the
return valueAt5thPosition;
of 4.
+ valueAt5thPosition);
array..
Description
A MathVector object will be passed to your method. Return the 5th element inside of that object.
If you look in the file MathVector.java you'll see there is a way to extract the value of one element in the
array contained inside a MathVector object:
/**
* Returns the element at the specified index.
*
* @param index the index of the element to return
* @return the element at the specified index
*/
public int at(int index) {
return array[index];
}
use it like myObject.at(4); to get the 4th element. You did similar operations (with a different syntax) with
Matlab.
What to reproduce this on your own machine? Here are some important files:
* preLabC.java (fill this in)
• MathVector.java (the class with all the methods that the student should explore)
MyTest.java (the JUnit testing file. Student can use this on their own computer if they wish)
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