package com.functional;
//下面是一个案例程序，使用Supplier<T>、Consumer<T>、Function<T, R>和Predicate<T>：
import java.util.ArrayList;
import java.util.List;
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Predicate;
import java.util.function.Supplier;
public class CaseProgram {
public static void main(String[] args) {
// Supplier<T>: 生成一个随机整数作为结果
Supplier<Integer> randomNumberSupplier = () -> (int) (Math.random() * 100);
// Consumer<T>: 打印参数的平方
Consumer<Integer> squarePrinter = number -> System.out.println("平方：" + number * number);
// Function<T, R>: 将整数转换成字符串
Function<Integer, String> integerToStringConverter = number -> "生成的随机数数字: " + number;
// Predicate<T>: 判断奇数
Predicate<Integer> oddNumberPredicate = number -> number % 2 != 0;
// 调用示例
int randomNum = randomNumberSupplier.get();
squarePrinter.accept(randomNum);
String numberString = integerToStringConverter.apply(randomNum);
System.out.println(numberString);
boolean isOdd = oddNumberPredicate.test(randomNum);
System.out.println("是否为奇数: " + isOdd);
}
}
