THE PACKAGE JAVA.LANG

java.lang.Integer

20.7

20.7.19

public static Integer valueOf(String s)

throws NumberFormatException

The argument is interpreted as representing a signed decimal integer, exactly as if

the argument were given to the

parseInt

 method that takes one argument

( 20.7.17). The result is an

Integer

 object that represents the integer value spec 

ified by the string.

In other words, this method returns an

Integer

 object equal to the value of:

new Integer(Integer.parseInt(s))

20.7.20

public static Integer valueOf(String s, int radix)

throws NumberFormatException

The first argument is interpreted as representing a signed integer in the radix spec 

ified by the second argument, exactly as if the arguments were given to the

parseInt

 method that takes two arguments ( 20.7.18). The result is an

Integer

object that represents the integer value specified by the string.

In other words, this method returns an

Integer

 object equal to the value of:

new Integer(Integer.parseInt(s, radix))

20.7.21

public static Integer getInteger(String nm)

The first argument is treated as the name of a system property to be obtained as if

by the method

System.getProperty

 ( 20.18.9). The string value of this prop 

erty is then interpreted as an integer value and an

Integer

 object representing this

value is returned. If there is no property of the specified name, or if the property

does not have the correct numeric format, then

null

 is returned.

In other words, this method returns an

Integer

 object equal to the value of:

getInteger(nm, null)

20.7.22

public static Integer getInteger(String nm, int val)

The first argument is treated as the name of a system property to be obtained as if

by the method

System.getProperty

 ( 20.18.9). The string value of this prop 

erty is then interpreted as an integer value and an

Integer

 object representing this

value is returned. If the property does not have the correct numeric format, then an

Integer

 object that represents the value of the second argument is returned.

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