Java 小白 == 与 equals 与不区分大小写

   private static void fun6() {
        String a = "abc";
        String b = new String("abc");
        String c = "abc";
        System.out.println(a==b);
        System.out.println(a==c);
        //String 类中已经重写了equals方法，比较的是字符串中 值序列是否相同
        System.out.println(a.equals(b));
        System.out.println(a.equals(c));
        String x = "Hab你好";
        String y = "hab你好";
        //忽略大小写比较两个字符串值是否相同
        System.out.println(x.equalsIgnoreCase(y));
    }
   public class homework {
    public static void main(String[] args) {
       fun6();
    }
 }