To manipulate strings in Groovy, you can use various methods such as trimming, splitting, and replacing.
To trim a string, you can use the trim() method, which removes any leading and trailing whitespace characters from the string.
To split a string into an array of substrings based on a delimiter, you can use the split() method. This method takes a regular expression as an argument and returns an array of substrings.
To replace a specific substring within a string with another substring, you can use the replace() method. This method takes two arguments - the substring to be replaced and the substring to replace it with.
Overall, manipulating strings in Groovy is simple and intuitive with these built-in methods.
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How to extract a substring from a string in Groovy?
You can extract a substring from a string in Groovy using the substring method. Here is an example:
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def string = "Hello, World!" def substring = string.substring(7, 12) println(substring) |
In this example, the substring method is called on the string object with the starting index (7) and the ending index (12) specified as arguments. This will extract the substring "World" from the original string.
How to remove leading and trailing whitespace from a string in Groovy?
In Groovy, you can use the trim() method to remove leading and trailing whitespace from a string. Here is an example:
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def str = " This is a string with leading and trailing whitespace " def trimmedStr = str.trim() println(trimmedStr) // Output: "This is a string with leading and trailing whitespace" |
The trim() method removes any leading and trailing whitespace from the string and returns the result.
What is the syntax for converting a string to uppercase in Groovy?
In Groovy, you can convert a string to uppercase using the toUpperCase() method. Here is the syntax:
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String originalString = "hello world" String upperCaseString = originalString.toUpperCase() println upperCaseString // Output: HELLO WORLD |
You can also directly call the toUpperCase() method on the string in a single line like this:
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String originalString = "hello world" println originalString.toUpperCase() // Output: HELLO WORLD |
What is the replaceAll() method used for in Groovy?
The replaceAll() method in Groovy is used to replace all occurrences of a specified substring with a new string in a given string. It takes two parameters: the substring to be replaced and the new string to replace it with. This method is similar to the replace() method, but it replaces all occurrences of the specified substring, whereas the replace() method only replaces the first occurrence.
How to remove a specific substring from a string in Groovy?
You can remove a specific substring from a string in Groovy using the replaceAll() method.
Here is an example:
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def originalString = "Hello World, Hello Universe" def substringToRemove = "Hello" def newString = originalString.replaceAll(substringToRemove, "") println newString |
In this example, the replaceAll() method is used to remove all occurrences of the substring "Hello" from the original string. The resulting string will be " World, Universe".
Alternatively, if you want to remove only the first occurrence of the substring, you can use the replaceFirst() method like this:
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def originalString = "Hello World, Hello Universe" def substringToRemove = "Hello" def newString = originalString.replaceFirst(substringToRemove, "") println newString |
This will remove only the first occurrence of the substring "Hello" from the original string.
How to convert a string to an array of characters in Groovy?
In Groovy, you can easily convert a string to an array of characters by using the toCharArray() method. Here's an example:
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String str = "Hello" char[] charArray = str.toCharArray() println charArray |
This will output:
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[H, e, l, l, o]
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Now you have the original string converted into an array of characters.
