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Java - get first n characters from string
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In this article, we would like to show you how to get the first n characters from a string in Java.
Quick solution:
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String text = "1234";2
int n = 3;3
String firstCharacters = text.substring(0, n);4
5
System.out.println( firstCharacters ); // 123
The below example shows how to use substring() method to get the first n characters from the text string.
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public class StringUtils {2
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public static String getFirstCharacters(String text, int charactersCount) {4
int offset = Math.min(charactersCount, text.length());5
return text.substring(0, offset);6
}7
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public static void main(String[] args) {9
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System.out.println( getFirstCharacters( "1234", 3) ); // 12311
System.out.println( getFirstCharacters( "1234", 2) ); // 1212
System.out.println( getFirstCharacters( "12", 1) ); // 113
System.out.println( getFirstCharacters( "1", 3) ); // 114
System.out.println( getFirstCharacters( "", 3) ); //15
}16
}Output:
xxxxxxxxxx1
1232
123
14
15
