Java Integer and string conversion (GO)

1 How do I convert string strings to integer int?

A. There are two methods:

1). int i = Integer.parseint ([String]); Or

i = Integer.parseint ([string],[int radix]);

2). int i = integer.valueof (my_str). Intvalue ();

Note: The string is converted to Double, Float, and Long in a similar way.

2 How do I convert an integer int to a string string?

A. There are three ways:

1.) String s = string.valueof (i);

2.) String s = integer.tostring (i);

3.) String s = "" + I;

Note: Double, Float, Long turn into a string in a similar way.

Java data type conversion Ynniebo [Favorites]

Keyword type conversions

Source

This is an example of the conversion of data numbers in Java. For everyone to learn

Package cn.com.lwkj.erts.reGISter;

Import Java.sql.Date;

public class Typechange {

Public Typechange () {

}

Change the string type to the int type

public static int Stringtoint (String intstr)

{

Integer integer;

Integer = integer.valueof (INTSTR);

return Integer.intvalue ();

}

change int type to the string type

public static String inttostring (int value)

{

Integer integer = new integer (value);

return integer.tostring ();

}

Change the string type to the float type

public static float Stringtofloat (String floatstr)

{

Float floatee;

Floatee = float.valueof (FLOATSTR);

return Floatee.floatvalue ();

}

Change the float type to the string type

public static String floattostring (float value)

{

float floatee = new float (value);

return floatee.tostring ();

}

Change the string type to the Sqldate type

public static Java.sql.Date stringtodate (String datestr)

{

Return java.sql.Date.valueOf (DATESTR);

}

Change the Sqldate type to the string type

public static String datetostring (Java.sql.Date datee)

{

return datee.tostring ();

}

public static void Main (string[] args)

{

Java.sql.Date Day;

Day = Typechange.stringtodate ("2003-11-3");

String strday = typechange.datetostring (day);

System.out.println (Strday);

}

}

Common data type conversion functions in Java

Although all can be found in the Java API, tidy up to make a backup.

String->byte

byte static byte parsebyte (String s)

Byte->string

byte static String toString (Byte b)

Char->string

Character static string to string (char c)

String->short

Short static short Parseshort (String s)

Short->string

Short static String toString (short s)

String->integer

Integer static int parseint (String s)

Integer->string

Integer static String tostring (int i)

String->long

Long Static long Parselong (String s)

Long->string

Long static String toString (long i)

String->float

float static float parsefloat (String s)

Float->string

float static String toString (float f)

String->double

Double static double parsedouble (String s)

Double->string

Double static String toString (double D)

Java Integer and string conversion (GO)