java中有关构造方法中的输出

package testasdd;

public class Abcdefg {
    String name;
    int age;
    
    Abcdefg(String namel,int agel){
    	name=namel;
    	age=agel;
    	System.out.println("我可谢谢你了");
    }
	
    void bank() {
    	System.out.println("可以的");
    }
	

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Abcdefg a= new Abcdefg("滑板", 22);
		String name=a.name;
		int age=a.age;
		System.out.println("我是"+name+"玩了"+age);
		a.bank();
	
	}

}

package test3；
public class Student {
 private String name;
 private long ID;
 private double score;

 public String getName() {
  return name;
 }
 public void setName(String name) {
  this.name = name;
 }
 public long getID() {
  return ID;
 }
 public void setID(long iD) {
  ID = iD;
 }
 public double getScore() {
  return score;
 }
 public void setScore(double score) {
  this.score = score;
 }
 public static void main(String[] args) {
  Student s = new Student();
  s.setName("张三");
  s.setID(170316);
  s.setScore(86.0);
  System.out.println("学号为" + s.getID + "的" + s.getName() + "的成绩为" + s.getScore + "分。");
 }
}

package test3;

public class Test_Constructor1 {

 private String name;
 private String gender;
 private long ID;
 private long birthday;

 Test_Constructor1(String name, String gender, long ID, long birthday) {
  this.name = name;
  this.gender = gender;
  this.ID = ID;
  this.birthday = birthday;
 }
 public static void main(String[] args) {
  Test_Constructor1 s = new Test_Constructor1("Lily", "女", 100001, 200000226);
  System.out.println("姓名：" + s.name +  " 性别：" + s.gender + " 学号：" + s.ID + " 生日：" + s.birthday);
 }
}

package test3;

public class Test_Constructor2 {
 private int i;

 Test_Constructor2() {
  i = 5;
  System.out.println("i的值是" + i);
 }
 public static void main(String[] args) {
  Test_Constructor2 s = new Test_Constructor2();
 }
}