Java valueOf() Method

Java Number类Java Number Class

The valueOf() method is used to return the native Number object value of the given argument. The argument can be a native data type, String, etc.

This method is a static method. It can receive two arguments: one is a string, and the other is a radix.

Syntax

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-- an integer for an Integer object.

  • s-- a string for an Integer object.

  • radix-- the radix used when parsing string s, to specify the base number to use.

Return Value

  • Integer valueOf(int i)：Returns an Integer instance representing the specified int value.

  • Integer valueOf(String s):Returns an Integer object holding 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 using the radix provided by the second argument.

Example

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);   // using hexadecimal

                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

Java Number类Java Number Class

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