Java Float包装器类

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public class Main {

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  public static void main(String[] args) {

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    //create a Float object using one of the below given constructors

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    //1. Create an Float object from float primitive type

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    float f = 10.10f;

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    Float fObj1 = new Float(f);

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    System.out.println(fObj1);

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    //2. Create an Float object from double primitive type

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    double d = 10.10;

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    Float fObj2 = new Float(d);

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    System.out.println(fObj2);

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    /*

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    3. Create and Float object from String. method can

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    throw NumberFormatException if string doesnt contain parsable number.

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