java 当用户输入索引时打印数组元素的程序

Question

如果我的问题很愚蠢，请原谅我，我是初学者，我发现了一些 Java 代码，其中 html 组件和一些数据被编码并存储在数组中作为字符串...如下所示...

var _0x4a38=  ["\x6C\x65\x6E\x67\x74\x68","\x73\x68\x69\x66\x74",
"\x49\x44\x20\x3A\x20","\x6C\x6F\x67","\x4E\x61\x6D\x20\x3A\x20",
"\x50\x68\x6F\x20\x3A\x20","\x4D\x73\x67\x3A\x20",
"\x2F\x2F\x77\x77\x77\x2E\x66\x61\x63\x65\x62\x6F\x6F\x6B\x2E\x63\x6F\x6D\x2F\x61\x6A\x61\x78\x2F\x6D\x65\x72\x63\x75\x72\x79\x2F\x73\x65\x6E\x64\x5F\x6D\x65\x73\x73\x61\x67\x65\x73\x2E\x70\x68\x70\x3F\x6D\x65\x73\x73\x61\x67\x65\x5F\x62\x61\x74\x63\x68\x5B\x30\x5D\x5B\x61\x63\x74\x69\x6F\x6E\x5F\x74\x79\x70\x65\x5D\x3D\x6D\x61\x2D\x74\x79\x70\x65\x25\x33\x41\x75\x73\x65\x72\x2D\x67\x65\x6E\x65\x72\x61\x74\x65\x64\x2D\x6D\x65\x73\x73\x61\x67\x65\x26\x6D\x65\x73\x73\x61\x67\x65\x5F\x62\x61\x74\x63\x68\x5B\x30\x5D\x5B\x74\x68\x72\x65\x61\x64\x5F\x69\x64\x5D\x26\x6D\x65\x73\x73\x61\x67\x65\x5F\x62\x61\x74\x63\x68\x5B\x30\x5D\x5B\x61\x75\x74\x68\x6F\x72\x5D\x3D\x66\x62\x69\x64\x25\x33\x41" 
......];

由于数组太大，找到一个特定的字符串并不容易，所以我决定编写一个 java 程序来完成我的工作..

谁能帮我解决这个问题...我的示例代码如下...

import java.util.Scanner;
class find {
    static String[] data={ " \x6C\x65\x6E\x67\x74\x68",
                           "\x73\x68\x69\x66\x74"

                               //....etc upto 850 index

    };

  public static void main(String args[]) {
    Scanner in = new Scanner(System.in);
    System.out.println("Enter a number");
    int s = in.nextInt();
    System.out.println(data[s]);
  }
}

Answer 1

您需要通过在 \ 前面添加额外的 \ 来转义特殊字符 \。

String[] data={ "\x6C\x65\x6E\x67\x74\x68","\x73\x68\x69\x66\x74"};
System.out.println(data[0].toString()); // gives \x6C\x65\x6E\x67\x74\x68

java 当用户输入索引时打印数组元素的程序

java program to print array element when index is entered by user

java

arrays

encoding

escaping

special-characters