test2.txt

实验目的 1．培养学生综合掌握软件开发过程的能力。 2．培养学生综合运用面向对象设计方法的能力

Print formatted representations of objects to a text-output stream. This class implements all of the print methods found in PrintStream.
 It does not contain methods for writing raw bytes, for which a program should use unencoded byte streams. 
Unlike the PrintStream class, if automatic flushing is enabled it will be done only when one of the println() methods is invoked, rather than whenever a newline character happens to be output. 
The println() methods use the platform's own notion of line separator rather than the newline character.