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Matthias Nörr
8,614 PointsMultiplication of two integers not working
The compiler tells me there is an error on line 12 (int a = calcArea(7, 12);). The error is "cannot find symbol". Can someone tell me what the problem is?
class area {
int calcArea(int height, int width) {
return height * width;
}
}
class areaTest {
public static void main(String[] args) {
int a = calcArea(7, 12);
}
}
5 Answers
Shadab Khan
5,470 PointsSorry my bad.
We also need to create a new object of class area before invoking it's class function. Try the code below, it should work.
class area {
public int calcArea(int height, int width) {
return height * width;
}
}
class areaTest {
public static void main(String[] args) {
area a = new area();
int x = a.calcArea(7, 12);
}
}
Shadab Khan
5,470 PointsHi Matthias,
class area {
public int calcArea(int height, int width) {
return height * width;
}
}
You have missed the public keyword before the function calcArea which makes it private, hence you couldn't call it from outside.
Hope that helps. All the best.
Matthias Nörr
8,614 PointsHi. Thanks. Adding the public keyword still compiles the same error.
Matthias Nörr
8,614 PointsThank you. This code gives me the desired result :)
class area {
int calcArea(int height, int width) {
return height * width;
}
}
class areaTest {
public static void main(String[] args) {
area a = new area();
int x = a.calcArea(7, 12);
System.out.println(x);
}
}
Aymen Hachicha
12,653 PointsThere is two ways to call a method in java. You should make your method calArea a static method so you can call it a the static method main. You can call it with the instance of areaTest Class: new areaTest().calcArea(); It should work. Good Luck ;)