" ".split(" ") generates a NullPointerException : 字符串分割 « 数据类型 « Java

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Java » 数据类型 » 字符串分割

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" ".split(" ") generates a NullPointerException


 



public class Main {

  public static void main(String args[]) throws Exception {



    String[] words = " ".split(" ");

    String firstWord = words[0];

    System.out.println(firstWord);

  }

}

/*



Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0

  at Main.main(Main.java:5)

*/

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