將如下三組不同類型的數(shù)據(jù)利用DataInputStream和DataOutputStream寫入文件,然后從文件中讀出。 (1){ 9.99,9.99,15.99,3.99,4.99}; (2){12,8,13,29,50}; (3){"Java T-shirt","Java Mug","Duke Juggling Dolls","Java Pin","Java Key Chain"}。