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Program to convert set of String to set of Integer in Java
Let’s say the following is our set of string −
Set<String> setStr = new HashSet<>(Arrays.asList("50", "100", "150", "200", "250", "300", "500"));Now, convert it to set of Integer −
Set<Integer> setInteger = setStr.stream().map(s -> Integer.parseInt(s)).collect(Collectors.toSet());
Example
Following is the program to convert set of String to set of Integer in Java −
import java.util.*;
import java.util.stream.*;
public class Demo {
public static void main(String args[]) {
Set<String> setStr = new HashSet<>(Arrays.asList("50", "100", "150", "200", "250", "300", "500"));
System.out.println("Set (String) = " + setStr);
Set<Integer> setInteger = setStr.stream().map(s -> Integer.parseInt(s))
.collect(Collectors.toSet());
System.out.println("Set (Integer) = " + setInteger);
}
}Output
Set (String) = [100, 200, 300, 500, 50, 150, 250] Set (Integer) = [50, 100, 500, 150, 200, 250, 300]
Updated on: 23-Sep-2019
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