This topic is about Java 11 – String API.
Java 11 introduced multiple enhancements to String.
- String.repeat(int) − Repeats a string given number of times. Returns the concatenated string.
- String.isBlank() − Checks if a string is empty or have white spaces only.
- String.strip() − Removes the leading and trailing whitespaces.
- String.stripLeading() − Removes the leading whitespaces.
- String.stripTrailing() − Removes the trailing whitespaces.
- String.lines() − Return the stream of lines of multi-line string.
Consider the following example −
ApiTester.java
import java.util.ArrayList;
import java.util.List;
public class APITester {
public static void main(String[] args) {
String sample = " abc ";
System.out.println(sample.repeat(2)); // " abc abc "
System.out.println(sample.isBlank()); // false
System.out.println("".isBlank()); // true
System.out.println(" ".isBlank()); // true
System.out.println(sample.strip()); // "abc"
System.out.println(sample.stripLeading()); // "abc "
System.out.println(sample.stripTrailing()); // " abc"
sample = "This\nis\na\nmultiline\ntext.";
List<String> lines = new ArrayList<>();
sample.lines().forEach(line -> lines.add(line));
lines.forEach(line -> System.out.println(line));
}
}
Output
abc abc false true true abc abc abc This is a multiline text.
In this topic we learned about Java 11 – String API. To know more.
Pingback: Java 11 - Standard HttpClient - Adglob Infosystem Pvt Ltd