
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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![javac -classpath .:/run_dir/junit-4.12. jar:target/dependency/* -d. Main.java
Main.java:53: error: non-static variable this cannot be referenced from a static context
RoomCarpet ri1 - new RoomCarpet);
//Function to calculate cost of carpet
public int getCost()
>
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{
//Calls getarea() function to calculate area
return rd.getArea()*rate;
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1 error
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compiler exit status 1
> 0
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//Class to test above classes
public static void main(String [] args)
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//Create object of Room Carpet
RoomCarpet ri = new RoomCarpet();
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//Set room Dimensions and carpet cost
r1.setDimensions(5,4);
r1. setRate(8);
// Call getCost function to get cost of carpet
System.out.println("The carpet will cost : "+r1.getCost());
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}
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//public static void main(String() args) {
//System.out.println("Hello world!");
//}
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72](https://content.bartleby.com/qna-images/question/8032634e-8305-4c00-bb13-cf3b26df7043/3c538f9b-0f7c-493e-b68b-8c6dd0943374/2uadeb_thumbnail.jpeg)
Transcribed Image Text:javac -classpath .:/run_dir/junit-4.12. jar:target/dependency/* -d. Main.java
Main.java:53: error: non-static variable this cannot be referenced from a static context
RoomCarpet ri1 - new RoomCarpet);
//Function to calculate cost of carpet
public int getCost()
>
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41
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{
//Calls getarea() function to calculate area
return rd.getArea()*rate;
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1 error
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compiler exit status 1
> 0
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//Class to test above classes
public static void main(String [] args)
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//Create object of Room Carpet
RoomCarpet ri = new RoomCarpet();
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//Set room Dimensions and carpet cost
r1.setDimensions(5,4);
r1. setRate(8);
// Call getCost function to get cost of carpet
System.out.println("The carpet will cost : "+r1.getCost());
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}
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//public static void main(String() args) {
//System.out.println("Hello world!");
//}
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Transcribed Image Text:1
class Main {
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class RoomDimension
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{
//Variables for length and width of Room
int length;
int width;
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//Set Functions to set values of length and width
public void setLength(int l)
{
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9.
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length = l;
}
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public void setwidth(int w)
{
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width = w;
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}
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//Function To Calculate Area of room
public int getArea()
{
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|return length*width;
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}
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class RoomCarpet
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{
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//A RoomDimension Object and cost variable
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RoomDimension rd = new RoomDimension ();
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int rate;
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//Functions to set room Dimensions and cost of carpet
public void setDimensions (int 1, int w)
{
rd. setlength(1);
rd. setWidth(w);
}
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public void setRate(int r)
{
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rate = r;
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