Basic Java Issues (2)

1. Constructors

/** * Test--Constructor */public class Test {public static void main (string[] args) {//member variable initialization order                A. The default constructor initializes the person P1 = new person ();                System.out.println (P1.getname () + ":" + p1.getage ());                B. Member variables display initialize person P2 = new Person ("CC");                System.out.println (P2.getname () + ":" + p2.getage ());                Person P3 = new person (10);                System.out.println (P3.getname () + ":" + p3.getage ());                C. Initialize the person P4 = new Person ("CC", 10) through the constructor to the member variable;                System.out.println (P4.getname () + ":" + p4.getage ());                D. Initializing member variables by the Set method person P5 = new person ();                P5.setname ("DD");                P5.setage (22);        System.out.println (P5.getname () + ":" + p5.getage ());        }};class person {private String name = "AA";        private int age = 1; constructor person (variable) action//1, compositionUsed to create the object person () {System.out.println ("null parameter constructor");                }//2, constructor for member variable initialization//3, the constructor can overload person (String N, int a) {this.name = n;                This.age = A;        System.out.println ("with parametric constructor");                } person (String N) {this.name = n;        System.out.println ("name constructor");                } person (int a) {this.age = A;        System.out.println ("Age constructor");        }/** * @return the name */public String GetName () {return name;        }; /** * @param name the name to set */public void SetName (String name) {this.name =        Name        };        /** * @return The Age */public int getage () {return age;        };        /** * @param age-The age-to set */public void Setage (int.) {this.age = age; };}; 

Basic Java issues (2)