One or more space split strings in JAVA __java

    

The split method of string supports regular expressions;

The regular expression \s to match any white-space character, + to match one or more times. first, the string to be divided

String str = "a  b     c  d E F      g"

Where the white space in the string is: a single space, multiple Spaces, tab tabs. Two, use one or more spaces to split a string

The correct code is as follows:

String [] arr = Str.split ("\\s+");
for (String Ss:arr) {
    System.out.println (ss);
}

As a contrast, the error code is as follows:

String [] arr2 = Str.split ("");
for (String ss:arr2) {
    System.out.println (ss);
}

The test code is as follows:

public class stringmul{
	
     //1. String split public
	 static STRING[]STR1 (string str)
	 {
          System.out.println ("Method one: ");
          String [] arr = Str.split ("");
          return arr;
	 }
	 2. String split public
	 static STRING[]STR2 (string str)
	 {
          System.out.println ("Method two:");
          String [] arr = Str.split ("\\s+");
          return arr;
	 }

	public static void Main (String[]args)
	{ 
		String str = "AB     cdef      g";
	    STRING[]ARR=STR1 (str);
        for (String Ss:arr) {
         System.out.println (ss);
        }
        STRING[]ARR2=STR2 (str);
         for (String ss:arr2) {
         System.out.println (ss);
        }

	}
}