super有两种用法,
其一,在构在方法体内使用:
如下:
public class a extends b
{
public a (int t)
{ super(t);
}
}
其二,在其它非构造方法体内使用。
如下:
public class a entends b
{ public a()
{}
public print(String a)
{ super.print(a);
}
}
其一,在构在方法体内使用:
如下:
public class a extends b
{
public a (int t)
{ super(t);
}
}
其二,在其它非构造方法体内使用。
如下:
public class a entends b
{ public a()
{}
public print(String a)
{ super.print(a);
}
}
2.点取父类成员
3.作为方法名表示父类构造方法。
4.子类对象的创建:沿继承链调用父类的构造方法。
例如:
public class Employee{ private String name;
private int age; public String getDetails(){
return "Name: "+name+"\nAge: "+age;
}
}public class Manager extends Employee{
private String department; public String getDetails(){
//call parent method
return super.getDetails()+"\nDeparment: "+department;
}
}///////////////////////////public class Manager extends Employee{
private Sring department; public Manager(String name,int age;String dept){
super(name,age);
department=dept;
}
public Manager(String n,String dept){
super(name);
department=dept;
}
public Manager(String dept){ // This code fails : no super()
department=dept;
}
}