A.RandomAccessFile(new File("D:\\myex\\dir1\\..\\test.java"),"rw")
B.RandomAccessFile("D:\\myex\\test.java","r")
C.RandomAccessFile("D:\\myex\\test.java")
D.RandomAccessFile("D:\\myex\\test.java","wr")
A.文件
B.目錄
C.輸入流
D.輸出流
A.改變當(dāng)前目錄
B.返回根目錄的名字
C.刪除文件
D.讀取文件中的數(shù)據(jù)