单项选择题

Given that the current directory is empty, and that the……

Given that the current directory is empty, and that the user has read and write permissions, and the following:

Which statement is true?（）

A.Compilation fails.
B.The file system has a new empty directory named dir.
C.The file system has a new empty directory named newDir.
D.The file system has a directory named dir, containing a file f1.txt.
E.The file system has a directory named newDir, containing a file f1.txt.

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热门试题

单项选择题Given: Which code fragment, inserted at line 24, outputs 123abc 123abc ?（）

A.sb1.append("abc"); s1.append("abc");
B.sb1.append("abc"); s1.concat("abc");
C.sb1.concat("abc"); s1.append("abc");
D.sb1.concat("abc"); s1.concat("abc");
E.sb1.append("abc"); s1 = s1.concat("abc");
F.sb1.concat("abc"); s1 = s1.concat("abc");
G.sb1.append("abc"); s1 = s1 + s1.concat("abc");
H.sb1.concat("abc"); s1 = s1 + s1.concat("abc");

单项选择题Given: What is the result?（）

A.2
B.3
C.4
D.6
E.7
F.Compilation fails.

单项选择题Given: Which code, inserted at line 15, allows the class Sprite to compile?（）

A.Foo { public int bar() { return 1; }
B.new Foo { public int bar() { return 1; }
C.new Foo() { public int bar() { return 1; }
D.new class Foo { public int bar() { return 1; }

多项选择题Which two code fragments correctly create and initialize a static array of int elements?（）

A.
B.
C.
D.

单项选择题Click the Exhibit button. Which statement is true about the classes and interfaces in the exhibit?（）

A.Compilation will succeed for all classes and interfaces.
B.Compilation of class C will fail because of an error in line 2.
C.Compilation of class C will fail because of an error in line 6.
D.Compilation of class AImpl will fail because of an error in line 2.