/*无参构造方法和有参构造方法*/
class Person8{
private String name;
private int age;
public Person8(){
System.out.println("调用了无参构造方法。。。");
}
public Person8(String name, int age){
this();
this.name = name;
this.age = age;
System.out.println("调用了有参构造方法,并给私有属性赋值。。。");
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public void prin(){
System.out.println("名字:"+this.name+" ,年龄:"+this.age);
}
}
public class PersonDemo8 {
public static void main(String[] args) {
// TODO Auto-generated method stub
Person8 per8 = new Person8("张三",34);
per8.prin();
}
}
class Person8{
private String name;
private int age;
public Person8(){
System.out.println("调用了无参构造方法。。。");
}
public Person8(String name, int age){
this();
this.name = name;
this.age = age;
System.out.println("调用了有参构造方法,并给私有属性赋值。。。");
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public void prin(){
System.out.println("名字:"+this.name+" ,年龄:"+this.age);
}
}
public class PersonDemo8 {
public static void main(String[] args) {
// TODO Auto-generated method stub
Person8 per8 = new Person8("张三",34);
per8.prin();
}
}

本文通过一个具体的Java示例介绍了类的构造方法及其使用方式,包括无参构造方法和有参构造方法。同时展示了如何利用构造方法为类的私有成员变量赋值,并通过实例演示了整个过程。
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