Mega Code Archive
0139 Returning a Value
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We can use return statement to return a value to the callers.
class Rectangle {
int width;
int height;
int getArea() {
return width * height;
}
}
public class Main {
public static void main(String args[]) {
Rectangle mybox1 = new Rectangle();
int area;
mybox1.width = 10;
mybox1.height = 20;
area = mybox1.getArea();
System.out.println("Area is " + area);
}
}
The output:
Area is 200
In this line the return statement returns value from the getArea()method. And the returned value is assigned to area.
area = mybox1.getArea();
The actual returned data type must be compatible with the declared return type . The variable receiving the returned value (area) must be compatible with the return type.
The following code uses the returned value directly in a println( ) statement:
System.out.println("Area is " + mybox1.getArea());
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