所有这些都是在 bluej 中编译和运行的，所以不需要 main 方法，我收到很多错误，而且我是 java 新手，所以我不知道如何修复它们。任何帮助将不胜感激。
这个有错误`import java.util.*;
公共类 LettingAgent{
private ArrayList<Property>myProperty;
private int propertyNo;
public LettingAgent(){
myProperty = new ArrayList<Property>();
propertyNo = 0;
}
public void addProperty(String newAddress, char newLocation, int newMonthlyRent, int newNoOfBedrooms){
Property newProperty = new Property(newAddress, newLocation, newMonthlyRent, newNoOfBedrooms);
myProperty.add(newProperty);
}
public void removeProperty(int propertyNo){
if(propertyNo>myProperty.size() || propertyNo<0){
System.out.println("Invalid Property Number!");
}else{
myProperty.remove(propertyNo);
System.out.println("Property Successfully removed.");
}
}
public void addTenant(int propertyNo, String tenantName){
if(propertyNo>myProperty.size() || propertyNo<0){
System.out.println("Invalid Property Number!");
}else{
myProperty.get(propertyNo);
//Property.newTenant(tenantName);
}
}
public void removeTenant(int propertyNo){
if( propertyNo<myProperty.size()){
myProperty.get(propertyNo);
//Property.removeTenant();
}else{
System.out.println("Invalid Property Number!");
}
}
public void searchProperty(String searchAddress){
int propertyNumber = 0;
for(Property Property : myProperty){
myProperty.get(propertyNumber);
if (myProperty.get(propertyNo).equals(searchAddress)){
System.out.println("Property Details: "+ Property);
}
else{
System.out.println("No Such Property.");
}
if(propertyNumber>myProperty.size()){
System.out.println("No Such Property.");
}else{
break;
}
}
}
public void propertyList(Char location, int maxRent, int minBedrooms){
for(Property Property : myProperty){
if((Property.getLocation().equals(location))&& (Property.get(newMonthlyRent).equals(maxRent))&& (myProperty.get(newNoOfBedrooms).equals(minBedrooms))){
System.out.println(propertyNo);
Property.displayDetails();
}else{
System.out.println("Property Does Not Fit Search Criteria!");
}
}
}
}
`
这是关联类`//属性类 public class Property{ //初始化变量 private String 地址；私人字符位置；私人 int 月租；私人 int noOfBedrooms; 私有布尔占用；私人字符串租户名；
//constructor, to create a new property
public Property( String newAddress, char newLocation,int newMonthlyRent, int newNoOfBedrooms){
address = newAddress;
location = newLocation;
monthlyRent = newMonthlyRent;
noOfBedrooms = newNoOfBedrooms;
occupied = false;
tenantName = "";
}
//method to return the address of created property
public String getAddress(){
return address;
}
//method to return the location of created property
public char getLocation(){
return location;
}
//method to return the rent of created property
public int getMonthlyRent(){
return monthlyRent;
}
//method to return the number of bedrooms of created property
public int getNoOfBedrooms(){
return noOfBedrooms;
}
//method to return the occupied status of created property
public boolean getOccupied(){
return occupied;
}
//method to return the name of the tenant of created property
public String getTenantName(){
return tenantName;
}
//method to set a new monthly rent
public void newRentRate(int newMonthlyRent){
monthlyRent = newMonthlyRent;
}
//method to set a new tenant, but only works if current property is empty
public void newTenant(String newTenant){
if(occupied){
System.out.println(" ERROR! Property is already occupied. ");
}else{
tenantName = newTenant;
occupied = true;
}
}
//method used to remove tenant and reset the occupied status to false
public void removeTenant(){
if(occupied){
tenantName = " ";
occupied = false;
}else{
System.out.println("ERROR! Property is already empty. ");
}
}
//method implements a switch statement to switch the char type in to a more understandable string type
// and also then displays the full property details.
public void displayDetails(){
String fullLocation;
switch(location){
case 'n': case 'N': fullLocation = " North London"; break;
case 's': case 'S': fullLocation = " South London"; break;
case 'e': case 'E': fullLocation = " East London"; break;
case 'w': case 'W': fullLocation = " West London"; break;
default: fullLocation = " unknown";
}
System.out.println("Address :" + address);
System.out.println("Location :" + fullLocation);
System.out.println("Monthly Rent : " + monthlyRent);
System.out.println("Number of bedrooms : " + noOfBedrooms);
System.out.println("Occupied Status : " + occupied);
if(occupied){
System.out.println("Tenants Name : " + tenantName);
}else{
System.out.println(" ");
}
}
} `