Groovy string

Reverse constructs a string text in Groovy by including string text in quotation marks.

Groovy offers a variety of ways to represent String literally. S trings in Groovy can be enclosed in single quotes ('), double quotes (') or three quotation marks ('"). In addition, groovy strings enclosed in triple quotes can span multiple lines.

Here's an example of string use in Groovy -

class Example { 
   static void main(String[] args) { 
      String a = 'Hello Single'; 
      String b = "Hello Double"; 
      String c = "'Hello Triple" + "Multiple lines'";
		
      println(a); 
      println(b); 
      println(c); 
   } 
}

When we run the program above, we will get the following results -

Hello Single 
Hello Double 
'Hello TripleMultiple lines'

The string index

The string in Groovy is an ordered sequence of characters. A single character in a string can be accessed through its position. This is given by the index location.

The string index starts at zero and ends with less than one of the string lengths. Groovy also allows negative indexes to count from the end of the string.

Here's an example of the use of string indexes in Groovy -

class Example { 
   static void main(String[] args) { 
      String sample = "Hello world"; 
      println(sample[4]); // Print the 5 character in the string
		
      //Print the 1st character in the string starting from the back 
      println(sample[-1]); 
      println(sample[1..2]);//Prints a string starting from Index 1 to 2 
      println(sample[4..2]);//Prints a string starting from Index 4 back to 2 
      
   } 
}

When we run the program above, we will get the following results -

o 
d 
el 
oll 

The basic string operation

First let's learn the basic string operations in groovy. They are given below.

String method

Here is a list of methods supported by the String class.