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)