多选题 What constructor is equivalent to the one listed here?
public SampleConstructor( {
System.out.println("SampleConstructor");
}

A. public SampleConstructor() { this(); System.out.println("Sample Constructor"); }
B. public SampleConstructor() { super(); System.out.println("Sample Constructor"); }
C. public SampleConstructor() { this.SampleConstructor(); System.out.println("Sample Constructor"); }
D. public SampleConstructor() { super.SampleConstructor(); System.out.println("Sample Constructor"); }
E. None of the above

【正确答案】 B

【答案解析】如果不在构造函数的第一行调用super，编译器将会自动添加它。A、C、D和E不正确。A不正确，因为this()调用当前类的构造函数。C和D不是super或this的正确用法。