module java::lang::Runnable

def to_proc

proc { self.run }

end

end

module java::lang::Iterable

include Enumerable

def each

iter = iterator

yield(iter.next) while iter.hasNext

end

def each_with_index

index = 0

iter = iterator

while iter.hasNext

yield(iter.next, index)

index += 1

end

end

end

module java::lang::Comparable

include Comparable

def <=>(a)

return nil if a.nil?

compareTo(a)

end

end

class java::lang::Throwable

def backtrace

stack_trace.map(&:to_s)

end

def set_backtrace(trace)

# ignored; Java exceptions can't be set to Ruby trace

trace

end

def message

msg = getLocalizedMessage

msg ? msg : ""

end

def to_s

message

end

def to_str

to_s

end

def inspect

to_string

end

class << self

alias :old_eqq :===

def ===(rhs)

if (NativeException == rhs.class) && (java_class.assignable_from?(rhs.cause.java_class))

true

else

old_eqq(rhs)

end

end

end

end

Java::byte[].class_eval do

def ubyte_get(index)

byte = self[index]

byte += 256 if byte < 0

byte

end

def ubyte_set(index, value)

value -= 256 if value > 127

self[index] = value

end

end