Java split method

Java split method

1. interval no. "."

(1) str. split (".")

String str = "10.156.35.87"; String [] str1 = str. split ("."); for (int I = 0; I
 
  

  
The running result is blank, that is, no result is output.
  


  
(2) str. split ("\\.")
  

  
String str = "10.156.35.87"; String [] str1 = str. split ("\."); for (int I = 0; I
   
    
The running result is as follows:
    

    
0th: 10 1st: 156 2nd: 35 3rd: 87
    
2. Single vertical number "|"
    

    
(1) str. split ("| ")
    

    
String str = "10 | 156 | 35 | 87"; String [] str1 = str. split ("|"); for (int I = 0; I
     
      
The running result is as follows:
      

      
0th: 1st: 1 2nd: 0 3rd: | 4th: 1 5th: 5 6th: 6 7th: | 8th: 3 9th: 10th: | 11th: 8 12th: 7
      
(2) str. split ("\ | ")
      

      

      
String str = "10 | 156 | 35 | 87"; String [] str1 = str. split ("\\|"); for (int I = 0; I
       
        
The running result is as follows:
        

        
0th: 10 1st: 156 2nd: 35 3rd: 87
        
3. asterisk (*)
        

        
(1) str. split ("*")
        

        
String str = "10*156*35*87"; String [] str1 = str. split ("*"); for (int I = 0; I
         
          
The running result is as follows:
          

          
Exception in thread "main" java.util.regex.PatternSyntaxException: Dangling meta character '*' near index 0*^at java.util.regex.Pattern.error(Pattern.java:1924)at java.util.regex.Pattern.sequence(Pattern.java:2090)at java.util.regex.Pattern.expr(Pattern.java:1964)at java.util.regex.Pattern.compile(Pattern.java:1665)at java.util.regex.Pattern.
           
            (Pattern.java:1337)at java.util.regex.Pattern.compile(Pattern.java:1022)at java.lang.String.split(String.java:2361)at java.lang.String.split(String.java:2403)at com.you.model.JavaSplit.main(JavaSplit.java:29)
           
          
(2) str. split ("\\*")
          

          

          
String str = "10*156*35*87"; String [] str1 = str. split ("\ *"); for (int I = 0; I
           
            
The running result is as follows:
            

            
0th: 10 1st: 156 2nd: 35 3rd: 87
            
4. plus sign "+"
            

            
(1) str. split ("+ ")
            

            
String str = "10 + 156 + 35 + 87"; String [] str1 = str. split ("+"); for (int I = 0; I
             
              
The running result is as follows:
              

              

              
Exception in thread "main" java.util.regex.PatternSyntaxException: Dangling meta character '+' near index 0+^at java.util.regex.Pattern.error(Pattern.java:1924)at java.util.regex.Pattern.sequence(Pattern.java:2090)at java.util.regex.Pattern.expr(Pattern.java:1964)at java.util.regex.Pattern.compile(Pattern.java:1665)at java.util.regex.Pattern.
               
                (Pattern.java:1337)at java.util.regex.Pattern.compile(Pattern.java:1022)at java.lang.String.split(String.java:2361)at java.lang.String.split(String.java:2403)at com.you.model.JavaSplit.main(JavaSplit.java:29)
               
              
(2) str. split ("\ + ")
              

              

              
String str = "10 + 156 + 35 + 87"; String [] str1 = str. split ("\ +"); for (int I = 0; I
               
                
The running result is as follows:
                

                
0th: 10 1st: 156 2nd: 35 3rd: 87