求大牛解答，哭哭哭哭，写了一堆老是卡在
package search.Sequence;
public class BookIndex {
private String BookName;
private int BookNumber;
public void setBookName(String BookName){
this.BookName = BookName;
}
public void setBookNumber(int BookNumber){
this.BookNumber = BookNumber;
}
public String getBookName(String testBookName){
testBookName = this.BookName;
return testBookName;
}
public int getBookNumber(){
return this.BookNumber;
}
public BookIndex(String newBookName,int newBookNumber){
this.setBookName(newBookName);
this.setBookNumber(newBookNumber);
}
}package search.Sequence;
import java.util.Scanner;
public class Searching {
public static void main(String[] args) {
// TODO 自动生成的方法存根
BookIndex [] PutIndex={new BookIndex("达芬奇密码",1),
new BookIndex("计算",2),
new BookIndex("数据分析",3),
new BookIndex("唐家三少吃屎",4),
new BookIndex("天蚕土豆吃屎",5),
new BookIndex("卫斯理",6),
new BookIndex("侦探伽利略",7),
new BookIndex("达文西打字法",8),
new BookIndex("东京食屎狗",9)};
int esp ;
do{ esp = 0;
System.out.println("输入【1】按照编号查询书籍，【2】按照书名查询书籍：");
Scanner InPut_1 = new Scanner(System.in);
int putnum = InPut_1.nextInt();
if(putnum == 1){
System.out.println("输入您想找的书籍编号：");
int putBookNumber = InPut_1.nextInt();
for(int i=0;i<i+1;i++){
int a=PutIndex[i].getBookNumber();
if(a==putBookNumber){
String outName = null;
System.out.println("书籍是："+PutIndex[i].getBookName(outName));
break;
}else{continue;}
}
}
else if(putnum == 2){
System.out.println("输入您想找的书籍名字：");
String putBookName = InPut_1.nextLine();
for(int i=0;i<i+1;i++){
String testBookName = null;
PutIndex[i].getBookName(testBookName);/*这里老是出问题，之前是无参的不能赋值给别的变量，想不到我现在有参了还是这样子，出错*/
if(putBookName==testBookName){
System.out.println("书籍是："+PutIndex[i].getBookName(testBookName));
break;
}else{continue;}
}
}
else{esp=1;
System.out.println("输入有误请重新输入");
}
}while(esp == 1);
}
}求大牛解答我的问题，我先不考虑写try……catch的类，我要先解决图书的问题，想了我一整天了
