Java 将String转换为Float

/*来自 

 NowJava.com*/

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public class Main {

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  public static void main(String[] args) {

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    //1. Construct Float using constructor.

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    Float fObj1 = new Float("10.4");

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    System.out.println(fObj1);

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    //2. Use valueOf method of Float class. This method is static.

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    String str1 = "1.4";

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    Float fObj2 = Float.valueOf(str1);

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    System.out.println(fObj2);

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    String str2 = "7.9";

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