用Supplier接口和Lambda表达式获取数组最大值

package _5_22;

 

 

import java.util.function.Supplier;

 

public class InterfaceSupplier {

public static int getMax(Supplier<Integer> sup) {

return sup.get();

}

 

public static void main(String[] args) {

int[] arr = {80, 10, -20, 101, 75, 17, -30};

int maxValue = getMax(() -> {

int max = arr[0];

for (int i : arr) {

if (i > max) {

max = i;

}

}

return max;

});

System.out.println(maxValue);

}

}