1$opt$setObjectField
2$opt$setIntField
3$opt$setFloatField
4$opt$setLongField
5$opt$setDoubleField
6$opt$setByteField
7$opt$setBooleanField
8$opt$setCharField
9$opt$setShortField
10$opt$getObjectField
11$opt$getIntField
12$opt$getFloatField
13$opt$getLongField
14$opt$getDoubleField
15$opt$getByteField
16$opt$getBooleanField
17$opt$getCharField
18$opt$getShortField
19