Tushu2 Tushu2[] ={
new Tushu("数学"),
new Tushu("语文"),
new Tushu("英语"),
new Tushu("论语"),
new Tushu("日语"),
new Tushu("Java"),
new Tushu("喵语言")
};
String q = input.next();
for(int i=0;i<Tushu2.length;i++){
if (Tushu2[i].equals(q)) {
System.out.println("book: " +Tushu2[i]);
}
}
System.out.println("图书不存在");
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