Interpreting java.lang.NoSuchMethodError message

可能是调用的子程序方法 改了， 主程序 没有重新编译 。 

https://docs.oracle.com/javase/specs/jvms/se7/html/jvms-4.html#jvms-4.3.2

Character     Type          Interpretation
------------------------------------------
B             byte          signed byte
C             char          Unicode character
D             double        double-precision floating-point value
F             float         single-precision floating-point value
I             int           integer
J             long          long integer
L<classname>; reference     an instance of class 
S             short         signed short
Z             boolean       true or false
[             reference     one array dimension