Java String substring()

 class Main { public static void main(String[] args) { String str1 = "java is fun"; // extract substring from index 0 to 3 
 System.out.println(str1.substring(0, 4)); 
 } } // Output: java

substring() Syntax

 string.substring(int startIndex, int endIndex)

substring() Parameters

The substring() method can take a maximum of two arguments.

• startIndex - the beginning index
• endIndex (optional) - the ending index

substring() Return Value

The substring() method returns a substring from the given string.

• The substring begins with the character at the startIndex and extends to the character at index endIndex - 1
• If the endIndex is not passed, the substring begins with the character at the specified index and extends to the end of the string

Example 1: Java substring() With Only Start Index

 class Main { public static void main(String[] args) { String str1 = "program"; // 1st character to the last character 
 System.out.println(str1.substring(0)); // program 
 // 4th character to the last character System.out.println(str1.substring(3)); // gram } }

Example 2: Java substring() With Start and End Index

 class Main { public static void main(String[] args) { String str1 = "program"; // 1st to the 7th character System.out.println(str1.substring(0, 7)); // program // 1st to the 5th character 
 System.out.println(str1.substring(0, 5)); // progr 
 // 4th to the 5th character System.out.println(str1.substring(3, 5)); // gr } }

Also Read:

• Java String indexOf
• Check String Contains Substring