Introduction
The substringBetween() function in Java is a useful tool for extracting a substring based on the second occurrence of a given character or string. This function is part of the Apache Commons Lang library, and it can be used to extract a substring from a larger string. This tutorial will explain how to use the substringBetween() function in Java to extract a substring based on the second occurrence of a given character or string.
Solution
public static String substringBetween(String str, String open, String close) {
if (str == null || open == null || close == null) {
return null;
}
int start = str.indexOf(open, str.indexOf(open) + 1);
if (start != -1) {
int end = str.indexOf(close, start + open.length());
if (end != -1) {
return str.substring(start + open.length(), end);
}
}
return null;
}
You can use regex and Pattern matching to extract it, e.g.:
String s = "If this is good and if that is bad";
Pattern pattern = Pattern.compile("if(.*?)is");
Matcher m = pattern.matcher(s);
if(m.find()){
System.out.println(m.group(1).trim());
}
3
solved Extracting a substring based on second occurence using Java – substringBetween() function [closed]
If you are looking for a way to extract a substring based on the second occurrence of a character or string in Java, then the substringBetween() function is the perfect solution. This function is part of the Apache Commons Lang library and can be used to extract a substring between two specified strings. In this article, we will discuss how to use the substringBetween() function to extract a substring based on the second occurrence of a character or string.
The substringBetween() function takes two parameters: the first parameter is the string from which the substring is to be extracted, and the second parameter is the character or string that marks the beginning and end of the substring. The function will return the substring between the second occurrence of the character or string. For example, if you have a string “Hello World, Hello Again” and you want to extract the substring between the second occurrence of the word “Hello”, then you can use the substringBetween() function as follows:
String result = StringUtils.substringBetween("Hello World, Hello Again", "Hello");
System.out.println(result); // Outputs " Again"
As you can see, the substringBetween() function returns the substring between the second occurrence of the specified character or string. This is a very useful function when you need to extract a substring based on the second occurrence of a character or string.
In addition to the substringBetween() function, the Apache Commons Lang library also provides other functions that can be used to extract substrings. For example, the substringBefore() and substringAfter() functions can be used to extract the substring before or after a specified character or string. The substring() function can be used to extract a substring from a given string. All of these functions can be used to extract substrings based on the second occurrence of a character or string.
In conclusion, the substringBetween() function is a great way to extract a substring based on the second occurrence of a character or string in Java. This function is part of the Apache Commons Lang library and can be used to extract a substring between two specified strings. We have discussed how to use the substringBetween() function to extract a substring based on the second occurrence of a character or string. We have also discussed other functions that can be used to extract substrings from a given string.