빨간 부분을 모르겠습니다 형들 제발살려주세요








package mall;


import java.util.HashMap;


public class Customer {

private String id;

private String pwd;

private String name;

private String addr;


private HashMap<Object, Object> cart;


public Customer() {

}


public Customer(String id, String pwd, String name, String addr) {

super();   

this.id = id; 여기서 this 이거는 왜쓰는지 모르겠습니다 ㅜㅜ

this.pwd = pwd;

this.name = name;

this.addr = addr;

cart=new HashMap<Object, Object>();

}


public HashMap<Object, Object> getCart() {

return this.cart;

}


public void setCart(HashMap<Object, Object> cart) {

this.cart = cart;

}



public String getId() {

return id;

}


public void setId(String id) {

this.id = id;

}


public String getPwd() {

return pwd;

}


public void setPwd(String pwd) {

this.pwd = pwd;

}


public String getName() {

return name;

}


public void setName(String name) {

this.name = name;

}


public String getAddr() {

return addr;

}


public void setAddr(String addr) {

this.addr = addr;

}



@Override

public String toString() {

return "Customer [id=" + id + ", pwd=" + pwd + ", name=" + name</span></p><p><span class="Apple-tab-span" style="white-space: pre; background-color: rgb(255, 0, 0); color: rgb(255, 255, 255);"> + ", addr=" + addr + "]";

}


}