如何在Java中将Integer数组列表转换为float数组？
要将整数数组列表转换为浮点数组，让我们首先创建一个整数数组列表-
ArrayList < Integer > arrList = new ArrayList < Integer > (); arrList.add(25); arrList.add(50); arrList.add(100); arrList.add(200); arrList.add(300); arrList.add(400); arrList.add(500);
现在，将整数数组列表转换为浮点数组。我们首先将大小设置为float数组。这样，整数数组的每个值都会分配给float数组-
final float[] arr = new float[arrList.size()];
int index = 0;
for (final Integer value: arrList) {
arr[index++] = value;
}示例
import java.util.ArrayList;
public class Demo {
public static void main(String[] args) {
ArrayList<Integer>arrList = new ArrayList<Integer>();
arrList.add(25);
arrList.add(50);
arrList.add(100);
arrList.add(200);
arrList.add(300);
arrList.add(400);
arrList.add(500);
final float[] arr = new float[arrList.size()];
int index = 0;
for (final Integer value: arrList) {
arr[index++] = value;
}
System.out.println("Elements of float array...");
for (Float i: arr) {
System.out.println(i);
}
}
}输出结果
Elements of float array... 25.0 50.0 100.0 200.0 300.0 400.0 500.0