我不明白如何使用lambdas将方法作为参数传递.
考虑以下(不编译)代码,如何完成它以使其工作？
public class DumbTest {
public class Stuff {
public String getA() {
return "a";
}
public String getB() {
return "b";
}
}
public String methodToPassA(Stuff stuff) {
return stuff.getA();
}
public String methodToPassB(Stuff stuff) {
return stuff.getB();
}
//MethodParameter is purely used to be comprehensive,nothing else...
public void operateListWith(List listStuff,MethodParameter method) {
for (Stuff stuff : listStuff) {
System.out.println(method(stuff));
}
}
public DumbTest() {
List listStuff = new ArrayList<>();
listStuff.add(new Stuff());
listStuff.add(new Stuff());
operateListWith(listStuff,methodToPassA);
operateListWith(listStuff,methodToPassB);
}
public static void main(String[] args) {
DumbTest l = new DumbTest();
}
}