求解，大神

public abstract class Employee{

    private String name;

    public Employee (String name){

    this.name=new String(name);

}

    public String getName(){

        return name;

}

    public abstract double enrning();

}

public final calss Boss extends Employee{

    private double weeeklySalary;

public Boss(String name,double weeklySalary){

    super(name);

    setWeeklySalary(WeeklySalary);

}

public void setWeeklySalary(double WeeklySalary){

if(WeeklySalary<0) this.WeeklySalary=0;

else this.WeeklySalary=WeeklySalary;

}

public double earnings(){

    return WeeklySalary;

}

public String toString(){

    return"Boss"+getName()+"每周挣"+WeeklySalary+"元";

}

}

父类中的 this.name=new String(name);

子类中的 super（name）;分别是什么意思？