The valueOf() method is used to return the native Number object value of the given parameter. The parameter can be a native data type, String, etc.
This method is a static method. This method can receive two parameters, one is a string and the other is the base.
This method has the following syntax formats:
static Integer valueOf(int i) static Integer valueOf(String s) static Integer valueOf(String s, int radix)
Parameters
i -- The integer of the Integer object.
s -- String of Integer objects.
radix --The radix used when parsing the string s, used to specify the base number used.
Return value
Integer valueOf(int i): Returns an Integer instance representing the specified int value.
Integer valueOf(String s): Returns an Integer object that holds the value of the specified String.
Integer valueOf(String s, int radix): Returns an Integer object that holds the value extracted from the specified String when parsed with the radix provided by the second parameter.
Example
public class Test{ public static void main(String args[]){ Integer x =Integer.valueOf(9); Double c = Double.valueOf(5); Float a = Float.valueOf("80"); Integer b = Integer.valueOf("444",16); // 使用 16 进制 System.out.println(x); System.out.println(c); System.out.println(a); System.out.println(b); } }
Compile the above program and the output result is:
9 5.0 80.0 1092
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