Adding String.dummy

gistfile1.txt

$ bin/java -jar ~/projects/jol/jol-cli/target/jol-internals.jar java.lang.String
Running 64-bit HotSpot VM.
Using compressed references with 3-bit shift.
Objects are 8 bytes aligned.
Field sizes by type: 4, 1, 1, 2, 2, 4, 4, 8, 8 [bytes]
Array element sizes: 4, 1, 1, 2, 2, 4, 4, 8, 8 [bytes]

java.lang.String object internals:
 OFFSET  SIZE    TYPE DESCRIPTION                    VALUE
      0     4         (object header)                01 00 00 00 (0000 0001 0000 0000 0000 0000 0000 0000)
      4     4         (object header)                00 00 00 00 (0000 0000 0000 0000 0000 0000 0000 0000)
      8     4         (object header)                db 02 00 f8 (1101 1011 0000 0010 0000 0000 1111 1000)
     12     4  char[] String.value                   []
     16     4     int String.hash                    0
     20     1 boolean String.dummy                   false
     21     3         (loss due to the next object alignment)
Instance size: 24 bytes (estimated, add this JAR via -javaagent: to get accurate result)
Space losses: 0 bytes internal + 3 bytes external = 3 bytes total

$ bin/java -version
openjdk version "1.8.0-internal-fastdebug"
OpenJDK Runtime Environment (build 1.8.0-internal-fastdebug-jenkins_2014_05_05_06_18-b00)
OpenJDK 64-Bit Server VM (build 25.0-b70-fastdebug, mixed mode)