Conversion of common data types in Java

1. Common data type conversion functions in Java
String-& gt; byte
Byte static byte parsebyte (string S)
Byte-& gt; string
Byte static string tostring (byte B)
Char-& gt; string
Character static string to string (char C)
String-& gt; short
Short static short parseshort (string S)
Short-& gt; string
Short static string tostring (short S)
String-& gt; integer
Integer static int parseint (string S)
Integer-& gt; string
Integer static string tostring (int I)
String-& gt; long
Long static long parselong (string S)
Long-& gt; string
Long static string tostring (long I)
String-& gt; float
Float static float parsefloat (string S)
Float-& gt; string
Float static string tostring (float F)
String-& gt; double
Double static double parsedouble (string S)
Double-& gt; string
Double static string tostring (double D)
2. Data type conversion of Classes
// Convert string to int
Public static int stringtoint (string intstr)
{
Integer integer;
Integer = integer. valueof (intstr );
Return integer. intvalue ();
}
// Convert int to string
Public static string inttostring (INT value)
{
Integer integer = new INTEGER (value );
Return integer. tostring ();
}
// Convert string to float
Public static float stringtofloat (string floatstr)
{
Float floatee;
Floatee = float. valueof (floatstr );
Return floatee. floatvalue ();
}
// Convert float to string
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 ();
}
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