Java:this示例

public class Leaf {

    int i = 0;

    Leaf inceament() {
        i++;
        return this;
    }

    void print() {
        System.out.println("i= " + i);
    }

    
    public static void main(String[] args) {
        Leaf x = new Leaf();
        x.inceament().inceament().inceament().print();
    }
}

输出

i= 3

有几个inceament就输出几