检索图书java代码

FindMess.java
public class FindMess{
	public static void main(String[] args) {
		String mess="书名:Java程序设计,出版时间:2011.10.01,"+"出版社:清华大学出版社,价格:29.8元,页数:389页";
	if(mess.contains("程序")) {
		System.out.println("图书信息包含有"程序"");	
	}
	int index=mess.indexOf(":",3);
	String date=mess.substring(index+1,index+11);
	System.out.println(date);
	int pricePosition=mess.indexOf("价格");
	int endPosition=mess.indexOf("元");
	String priceMess=mess.substring(pricePosition+3,endPosition);
	double price=Double.parseDouble(priceMess);
	System.out.println("图书价格:"+priceMess);
	if(price>=29) {
		System.out.println("图书价格"+price+"大于或者等于29元");
	}
	else {
		System.out.println("图书价格"+price+"小于29元");
	}
	index=mess.lastIndexOf(":");
	endPosition=mess.lastIndexOf("页");
	String pageMess=mess.substring(index+1,endPosition);
	int p=Integer.parseInt(pageMess);
	if(p>=360) {
		System.out.println("图书的页数"+p+"大于或等于360");
	}
	else {
		System.out.println("图书的页数"+p+"小于360");
	}
  }
}

运行结果：