在如下所示的类Test中，共有______个构造方法

public class Test {
    private int x; 
    public Test() {
        x = 35; 
    }
    public void Test(double f) {

        ...

        this.x = (int)f; 
    }
    public Test(double f) { 
        this.x = (int)f; 
    }
    public Test(String s) {
    } 
}