Lambda表达式

public interface ILambda {    public String getString(int a, String b);}

public class MyLambda {    public static  void main(String[] args) {        //简单句       // ILambda iLambda = (a, b) -> a + b;        //有多句处理逻辑的        ILambda iLambda = (a, b) -> {            StringBuilder stringBuilder = new StringBuilder();            stringBuilder.append("systemSay:");            stringBuilder.append(a);            stringBuilder.append(b);            return stringBuilder.toString();        };        String result = iLambda.getString(100, "hello");        System.out.println(result);    }}

输出：

systemSay:100hello