三目运算符的坑

public class Test {
    public static void main(String[] args) {
        Long test = null;
        Long a =  2 > 1 ? test  : 0L;
    }
}

javap -v Test.class > output.txt

public static void main(java.lang.String[]);
   descriptor: ([Ljava/lang/String;)V
   flags: ACC_PUBLIC, ACC_STATIC
   Code:
     stack=2, locals=3, args_size=1
        0: aconst_null
        1: astore_1
        2: aload_1
        3: invokevirtual #2                  // Method java/lang/Long.longValue:()J
        6: invokestatic  #3                  // Method java/lang/Long.valueOf:(J)Ljava/lang/Long;
        9: astore_2
       10: return
     LineNumberTable:
       line 10: 0
       line 11: 2
       line 12: 10
     LocalVariableTable:
       Start  Length  Slot  Name   Signature
           0      11     0  args   [Ljava/lang/String;
           2       9     1  test   Ljava/lang/Long;
          10       1     2     a   Ljava/lang/Long;