How to split a string in Java

appropriate method: String#split().

 String string = "420-520"; 

 String[] parts = string.split("-"); 

 String part1 = parts[0]; // 420  

 String part2 = parts[1]; // 520

To test beforehand if the string contains a -, just use String#contains().

if (string.contains("-")) 

 {  

// Split it. 

 } else  

{ 

 throw new IllegalArgumentException("String " + string + " does not contain -");  

}