List.remvoeif Method
removeif()메소드는 리스트내의 엘리먼트를 필터조건의 만족한는 것만을 골라 삭제할 때 사용된다.
Package: java.util
Java Platform: Java SE 8
Syntax:
removeif(Prdicate<? super E> filter)
형태
public boolean removeIf(Predicate<? super E> filter)
예
import java.util.function.*;
class SamplePredicate<t> implements Predicate<t>{
T varc1;
public boolean test(T varc){
if(varc1.equals(varc)){
return true;
}
return false;
}
}
import java.util.*;
public class test {
public static void main(String[] args) {
ArrayList<String> color_list;
SamplePredicate<String> filter;
color_list = new ArrayList<> ();
filter = new SamplePredicate<> ();
filter.varc1 = "White";
// use add() method to add values in the list
color_list.add("White");
color_list.add("Black");
color_list.add("Red");
color_list.add("White");
color_list.add("Yellow");
color_list.add("White");
System.out.println("List of Colors");
System.out.println(color_list);
// Remove all White colors from color_list
color_list.removeIf(filter);
System.out.println("Color list, after removing White colors :");
System.out.println(color_list);
}
}
결과
List of Colors
[White, Black, Red, White, Yellow, White]
Color list, after removing White colors :
[Black, Red, Yellow]