How to get first n characters of a string in Java
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we are going to learn about how to get the first n characters of a string in Java.
Consider, we have a string like this:
String str = "google";
Now, we want to get the first 3 three characters goo from the above string.
Getting the first n characters
To access the first n characters of a string in Java, we can use the built-in substring() method by passing 0, n as an arguments to it.
0 is the first character index (that is start position), n is the number of characters we need to get from a string.
Here is an example, that gets the first 3 characters of a string:
String str = "google";System.out.println(str.substring(0, 3));
Output:
"goo"
Note: The extraction starts at index 0 and ends before index 3.
Similarly, we can also get the first 4 characters of a string like this:
String str = "google";System.out.println(str.substring(0, 4));
Output:
"goog"
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