@bramblex 这不简单。。。

```
public interface Func1<T, TResult> {
public TResult call(T arg1);
}
```

```
Func1<Integer, Func1<Integer, Integer>> add
= new Func1<Integer, Func1<Integer, Integer>>(){
@Override
public Func1<Integer, Integer> call(final Integer a) {
return new Func1<Integer, Integer>(){
@Override
public Integer call(Integer b) {
return a + b;
}
};
}
};

System.out.println(add.call(1).call(2)); //3

Func1<Integer, Integer> add2 = add.call(2);
System.out.println(add2.call(1)); //3
```