Input the coordinates of two points can be calculated the distance between them and determine whether they are in the first quadrant

Packet : 65520776myline.rar filelist
MyLine\.classpath
MyLine\.project
MyLine\Global.class
MyLine\Global.java
MyLine\Main.class
MyLine\Main.java
MyLine\MyLine.class
MyLine\MyLine.java
MyLine\Point.class
MyLine\Point.java
MyLine

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