Java 총 정리 [82. Set]

    
public class SetTest1 {

 public static void main(String[] args) {
  // TODO Auto-generated method stub
  HashSet<String> a = new HashSet<>();
  HashSett<Integer> b = new HashSet<>();
  
  String[] color =
  {"빨간색","주황색","노란색","초록색","파란색","남색","보라색"};
  
  for(int i = 0;i<color.length;i++) {
   a.add(color[i]);
   b.add(i);
  }
  a.add("빨간색");
  boolean checkChange = a.add("무지개색");
  System.out.println(checkChange);
  
  System.out.println("b의 가장 큰값은 ?" + Collections.max(b));
  System.out.println("b의 가장 최소값은 ?" + Collections.min(b));
  
  System.out.println("=============================");
  //향상된 for문
  for(String s : a) {
   System.out.println(s);
  }
  
  System.out.println("=============================");
  //일반
  Iterator it = a.iterator();
  
  while(it.hasNext()) {
   System.out.println(it.next());
  } 
  
 }

}