Guava Floats类

Floats是一个用于原始类型float的实用类。

类声明

以下是 com.google.common.primitives.Floats 类的声明−

@GwtCompatible(emulated = true)
   public final class Floats
      extends Object

字段

方法

继承的方法

此类从以下类继承了方法：

• java.lang.Object

Floats类的示例

使用您选择的任何编辑器，创建以下Java程序，存放在C:/> Guava目录中。

GuavaTester.java

import java.util.List;

import com.google.common.primitives.Floats;

public class GuavaTester {

   public static void main(String args[]) {
      GuavaTester tester = new GuavaTester();
      tester.testFloats();
   }

   private void testFloats() {
      float[] floatArray = {1.0f,2.0f,3.0f,4.0f,5.0f,6.0f,7.0f,8.0f,9.0f};

      //convert array of primitives to array of objects
      List<Float> objectArray = Floats.asList(floatArray);
      System.out.println(objectArray.toString());

      //convert array of objects to array of primitives
      floatArray = Floats.toArray(objectArray);
      System.out.print("[ ");

      for(int i = 0; i< floatArray.length ; i++) {
         System.out.print(floatArray[i] + " ");
      }

      System.out.println("]");

      //check if element is present in the list of primitives or not
      System.out.println("5.0 is in list? " + Floats.contains(floatArray, 5.0f));

      //return the index of element
      System.out.println("5.0 position in list " + Floats.indexOf(floatArray, 5.0f));

      //Returns the minimum     
      System.out.println("Min: " + Floats.min(floatArray));

      //Returns the maximum     
      System.out.println("Max: " + Floats.max(floatArray)); 
   }
}

验证结果

使用 javac 编译器编译类，如下所示−

C:\Guava>javac GuavaTester.java

现在运行GuavaTester以查看结果。

C:\Guava>java GuavaTester

查看结果。

[1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0]
[ 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 ]
5.0 is in list? true
5.0 position in list 4
Min: 1.0
Max: 9.0