In this thesis , the position and function of java platform in the model of the dtv middleware has been briefly introduced . the system structure of java has also been studied . on the basis of analyzing the implementation mechanism of java awt especially , the thesis has presented a scheme porting awt to fltk graphic library and has offered a complete implementation on embedded mircowindows window - system 本文首先簡(jiǎn)要介紹了java平臺(tái)在數(shù)字電視中間件模型中的地位和作用,其次,研究了java的體系結(jié)構(gòu),重點(diǎn)分析了javaawt部分的實(shí)現(xiàn)機(jī)制,并以此為基礎(chǔ),提出了基于fltk圖形庫的awt實(shí)現(xiàn)方案,之后在microwindows窗口系統(tǒng)上給予了較為完整的實(shí)現(xiàn)。