如何在java中仅打印字符串的特定部分？
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How to print only specific parts of a string in java?
提问by CyborGamer
I am writing a program that writes a letter using specific parts of a string.
我正在编写一个程序，该程序使用字符串的特定部分编写一个字母。
Here is what I have so far (I am only a beginner)
这是我到目前为止所拥有的（我只是一个初学者）
import java.util.Scanner;
public class AutoInsurance {
public static void main (String[] args)
{
Scanner scan=new Scanner (System.in);
System.out.print("Enter Name:");
String Name;
Name=scan.nextLine();
System.out.print("Enter Street Address:");
String Address;
Address=scan.nextLine();
System.out.print("Enter city, state, and zip code:");
String Location;
Location=scan.nextLine();
System.out.println();
System.out.println();
System.out.println("Dear "+Name+",");
System.out.println(" You have been selected to receive this offer of auto insurance from");
System.out.println("Allspam Insurance Company! Drivers from "++" saved an average "); // I just want it to print the city here, between ++
// I will finish coding once I figure this out, but I'm stumped
}
}
采纳答案by JeanLescure
The best you can do here is to split your Adress string, by commas, and grab the first value from the resulting array.
在这里你能做的最好的事情是用逗号分割你的地址字符串，并从结果数组中获取第一个值。
Take a look at this questionfor more details on splitting a string in Java.
有关在 Java 中拆分字符串的更多详细信息，请查看此问题。
I suggest the following in your code:
我建议在您的代码中执行以下操作：
String[] AddressParts = Address.split(",");
String City = AddressParts[0];
System.out.println("Allspam Insurance Company! Drivers from "+City+" saved an average ");
Cheers!
干杯!
回答by ifloop
It would be a better style to use different variables for each part (city, postal and zip code).
为每个部分（城市、邮政编码和邮政编码）使用不同的变量会是一种更好的风格。
Otherwise you might
否则你可能
- Change the order of the elements, take postal into the middle and than do
String city = Location.split("[0-9]")[0]; - Define a token that the users inputs to seperate the data (e.g.
#) and than doString city = Location.split(#`)[0];
- 改变元素的顺序，把邮政放在中间，然后做
String city = Location.split("[0-9]")[0]; - 定义用户输入的令牌以分隔数据（例如
#）而不是String city = Location.split(#`)[0];
回答by David MacNeil
To break a string apart use this method
要将字符串分开，请使用此方法
String s = "abcde";
String p = s.substring(2, s.length);
From here, you can find out which parts of the string you want.
从这里，您可以找出您想要的字符串的哪些部分。
