How to Convert a Set of Strings to a Set of Floats in Java - Step by Step Examples

How to Convert a Set of Strings to a Set of Floats in Java ?

Answer

To convert a set of strings to a set of floats in Java, you can use the Stream API along with the map and filter functions to transform each string value into its corresponding float value.

✐ Examples

1 Convert a Set of Strings {"1.1", "2.2", "3.3"} to Floats

In this example,

First, we create a set of strings named stringSet1 with values {"1.1", "2.2", "3.3"}.
Next, we use the Stream API to convert each string value in stringSet1 to its corresponding float value. We use the map function to apply a lambda expression that converts each string to a float using Float.parseFloat().
We use the filter function to remove any null values that may occur during the conversion process.
Finally, we collect the resulting stream of floats into a set using the Collectors.toSet() method.

Java Program

import java.util.Set;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class Main {
    public static void main(String[] args) {
        Set<String> stringSet1 = Set.of("1.1", "2.2", "3.3");
        Set<Float> floatSet1 = stringSet1.stream()
                                        .map(Float::parseFloat)
                                        .filter(f -> f != null)
                                        .collect(Collectors.toSet());
        System.out.println(floatSet1);
    }
}

Output

[1.1, 2.2, 3.3]

2 Convert a Set of Strings {"4.5", "5.6", "6.7"} to Floats

In this example,

First, we create a set of strings named stringSet2 with values {"4.5", "5.6", "6.7"}.
Next, we use the Stream API to convert each string value in stringSet2 to its corresponding float value. We use the map function to apply a lambda expression that converts each string to a float using Float.parseFloat().
We use the filter function to remove any null values that may occur during the conversion process.
Finally, we collect the resulting stream of floats into a set using the Collectors.toSet() method.

Java Program

import java.util.Set;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class Main {
    public static void main(String[] args) {
        Set<String> stringSet2 = Set.of("4.5", "5.6", "6.7");
        Set<Float> floatSet2 = stringSet2.stream()
                                        .map(Float::parseFloat)
                                        .filter(f -> f != null)
                                        .collect(Collectors.toSet());
        System.out.println(floatSet2);
    }
}

Output

[4.5, 5.6, 6.7]

Summary

In this tutorial, we learned How to Convert a Set of Strings to a Set of Floats in Java language with well detailed examples.

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How to Convert a Set of Strings to a Set of Floats in Java - Step by Step Examples

How to Convert a Set of Strings to a Set of Floats in Java ?

Answer

✐ Examples

1 Convert a Set of Strings {"1.1", "2.2", "3.3"} to Floats

Java Program

Output

2 Convert a Set of Strings {"4.5", "5.6", "6.7"} to Floats

Java Program

Output

Summary

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