11. Breakpoint Tracing Initialization Process

classPerson {String name= "Li Guang";//name     PublicPerson () {//super ();//write without writing the statement, the same effectSystem.out.println ("Execute person ()"); }     PublicPerson (String name) { This. Name =name; System.out.println ("Execute person (name)"); }}classStudentextendsPerson {String School= "Wuhan University";//School     PublicStudent () {//super ();//write without writing the statement, the same effectSystem.out.println ("Execute Student ()"); }     PublicStudent (string name, string school) {Super(name);//The display called the parent class has a parameter constructor method, and no parameter construction method is executed         This. School =School; System.out.println ("Execute Student (name,school)"); }}classPostgraduateextendsStudent {String guide;//Mentor     PublicPostgraduate () {//super ();//write without writing the statement, the same effectSystem.out.println ("Execute postgraduate ()"); }     PublicPostgraduate (string name, String school, string guide) {Super(name, school);  This. Guide =Guide ; System.out.println ("Execute postgraduate (name, School, guide)"); }}classTestinherit { Public Static voidMain (string[] args) {Postgraduate Pgdt=NULL; PGDT=NewPostgraduate ();        System.out.println (); PGDT=NewPostgraduate ("Liu Jiao", "Peking University", "Miss Wang"); }}

11. Breakpoint Tracing Initialization Process