在命令行下运行jdb
然后在“>”提示符下打HELP可看到详细的调试命令清单。如：>help
run [class] [arg] 就是运行这个类用某个命令行参数。
例
>run MyClass 123 就是运行MyClass这个类并且使用了123这个命令行参数
其他的命令你自己看吧，很详细的。
整个操作方式如下
D:/j2sdk1.4.1_01/bin>jdb
Initializing jdb ...
> help
** command list **
run [class [args]] -- start execution of application's main class
threads [threadgroup] -- list threads
thread <thread id> -- set default thread
suspend [thread id(s)] -- suspend threads (default: all)
resume [thread id(s)] -- resume threads (default: all)
where [thread id] | all -- dump a thread's stack
wherei [thread id] | all -- dump a thread's stack, with pc info
up [n frames] -- move up a thread's stack
down [n frames] -- movedo
wn a thread's stack
kill <thread> <expr> -- kill a thread with the given exception object
interrupt <thread> -- interrupt a thread
print <expr> -- print value of expression
dump <expr> -- print all object information
eval <expr> -- evaluate expression (same as print)
set <lvalue> = <expr> -- assign new value to field/variable/array element
locals -- print all local variables in current stack frame
classes -- list currently known classes
class <class id> -- show details of named class
methods <class id> -- list a class's methods
fields <class id> -- list a class's fields
threadgroups -- list threadgroups
threadgroup <name> -- set current threadgroup
stop in <class id>.<method>[(argument_type,...)]
-- set a breakpoint in a method
stop at <class id>:<line> -- set a breakpoint at a line
clear <class id>.<method>[(argument_type,...)]
-- clear a breakpoint in a method
clear <class id>:<line> -- clear a breakpoint at a line
clear -- list breakpoints
catch [uncaught|caught|all] <exception-class id>
-- break when specified exception occurs
ignore [uncaught|caught|all] <exception-class id>
-- cancel 'catch' for the specified exception
watch [access|all] <class id>.<field name>
-- watch access/modifications to a field
unwatch [access|all] <class id>.<field name>
-- discontinue watching access/modifications to a fiel
d
trace methods [thread] -- trace method entry and exit
untrace methods [thread] -- stop tracing method entry and exit
step -- execute current line
step up -- execute until the current method returns to its cal
ler
stepi -- execute current instruction
next -- step one line (step OVER calls)
cont -- continue execution from breakpoint
list [line number|method] -- print source code
use (or sourcepath) [source file path]
-- display or change the source path
exclude [class id ... | "none"]
--do
not report step or method events for specified c
lasses
classpath -- print classpath info from target VM
monitor <command> -- execute command each time the program stops
monitor -- list monitors
unmonitor <monitor#> -- delete a monitor
read <filename> -- read and execute a command file
lock <expr> -- print lock info for an object
threadlocks [thread id] -- print lock info for a thread
pop -- pop the stack through and including the current fra
me
reenter -- same as pop, but current frame is reentered
redefine <class id> <class file name>
-- redefine the code for a class
disablegc <expr> -- prevent garbage collection of an object
enablegc <expr> -- permit garbage collection of an object
!! -- repeat last command
<n> <command> -- repeat command n times
help (or ?) -- list commands
version -- print version information
exit (or quit) -- exit debugger
<class id> or <exception-class id>: full class name with package
qualifiers or a pattern with a leading or trailing wildcard ('*')
NOTE: any wildcard pattern will be replaced by at most one full class
name matching the pattern.
<thread id>: thread number as reported in the 'threads' command
<expr>: a Java(tm) Programming Language expression.
Most common syntax is supported.
Startup commands can be placed in either "jdb.ini" or ".jdbrc"
in user.home or user.dir
>
