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Wan Nor Adzahari Wan Tajuddin
2,438 PointsWhat does it mean when we are making sure that the method doesn't return anything (by using void) ?
If I don't use void, I will fail the question because I have to make sure that the method isn't return anything. What actually is meant by "return" ? Does a method always meant to return something?
class GoKart {
public static final int MAX_BARS = 8;
private String color;
private int barCount;
private void charge() {
barCount = MAX_BARS;
}
public GoKart(String color) {
this.color = color;
}
public String getColor() {
return color;
}
}
1 Answer
andren
28,558 PointsA method does not have to return something, but all methods need to have a return type. The return type tells Java what type of value it can expect the method to return, the void type is just there to tell Java that the method does in fact not return anything.
Returning a value simply means that the method basically sends a value back to the code that called it after it is done running, using the return keyword. Let's say you created a method to pick a random item from some list as an arbitrary example. If the method choose an item but had no way of actually telling you what item it ended up choosing, it would be pretty pointless to call the method.
Returning values is a pretty fundamental part of Java programming, so it's something you'll see plenty of example of through the courses. So even if you don't fully understand it right now you'll get plenty of examples to look at and time to practice with it.
Wan Nor Adzahari Wan Tajuddin
2,438 PointsWan Nor Adzahari Wan Tajuddin
2,438 PointsI think your explanation cleared up some of the haze here. Thanks!