非静态变量不能从静态上下文中引用

我是java的初学者。
我无法编译下面的代码，因为我有17个关于“无法从静态上下文中引用的非静态变量”的错误。它总是指向“这个”。声明。我是一名学生非静态变量不能从静态上下文中引用

package MyLib; 
import java.util.*; 

class Book { 

static int pages; 
static String Title; 
static String Author; 
static int status; 
static String BorrowedBy; 
static Date ReturnDate; 
static Date DueDate; 

public static final int 
    BORROWED = 0; 

public static final int 
    AVAILABLE = 1; 

public static final int 
    RESERVED = 2; 

    //constructor 
public Book (String Title, String Author, int pp) { 
    this.Title = Title; 
    this.Author = Author; 
    this.pages = pp; 
    this.status = this.AVAILABLE; 
} 

public static void borrow(String Borrower/*, Date Due*/){ 
    if (this.status=this.AVAILABLE){ 
     this.BorrowedBy=Borrower; 
     this.DueDate=Due; 

    } 
    else { 

     if(this.status == this.RESERVED && this.ReservedBy == Borrower){ 
      this.BorrowedBy= Borrower; 
      this.DueDate=Due; 
      this.ReservedBy=""; 
      this.status=this.BORROWED; 
     } 
    } 
}

来源

2013-07-23 user2604536

哇，自从这个问题出现在'SO'后只有5分钟 – Reimeus

您的借用方法是否需要静态？我觉得使它非静态可以解决你的问题... – StephenTG

让你觉得也许java IDE可能会提醒你。 – sje397