©TCP-tryJAVA

import java.util.function.*;

public class prog {
	public static void main(String[] args){
		DoubleUnaryOperator oper;
		
		oper = (n) -> Math.abs(n);	// 람다 표현식
		System.out.println(oper.applyAsDouble(-5));
		
		oper = Math::abs;			// 메소드 참조
		System.out.println(oper.applyAsDouble(-5));
	}
}

​x
 
import java.util.function.*;
​
public class prog {
    public static void main(String[] args){
        DoubleUnaryOperator oper;
        
        oper = (n) -> Math.abs(n);  // 람다 표현식
        System.out.println(oper.applyAsDouble(-5));
        
        oper = Math::abs;           // 메소드 참조
        System.out.println(oper.applyAsDouble(-5));
    }
}