在Java中将字符串集合转换为整数集合的程序
假设以下是我们的字符串集-
Set<String> setStr = new HashSet<>(Arrays.asList("50", "100", "150", "200", "250", "300", "500"));现在，将其转换为整数集-
Set<Integer> setInteger = setStr.stream().map(s -> Integer.parseInt(s)).collect(Collectors.toSet());
示例
以下是在Java中将String的集合转换为Integer的集合的程序-
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);
}
}输出结果
Set (String) = [100, 200, 300, 500, 50, 150, 250] Set (Integer) = [50, 100, 500, 150, 200, 250, 300]