THE PACKAGE JAVA.LANG

java.lang.String

20.12

20.12.44

public static String valueOf(long l)

A string is created and returned. The string is computed exactly as if by the

method

Long.toString

 of one argument ( 20.8.12).

20.12.45

public static String valueOf(float f)

A string is created and returned. The string is computed exactly as if by the

method

Float.toString

 of one argument ( 20.9.16).

20.12.46

public static String valueOf(double d)

A string is created and returned. The string is computed exactly as if by the

method

Double.toString

 of one argument ( 20.10.15).

20.12.47

public String intern()

A pool of strings, initially empty, is maintained privately by the class

String

.

When the intern method is invoked, if the pool already contains a string equal

to this

String

 object as determined by the

equals

 method ( 20.12.9), then the

string from the pool is returned. Otherwise, this

String

 object is added to the

pool and a reference to this

String

 object is returned.

It follows that for any two strings

s

 and

t

,

s.intern() == t.intern()

 is

true

 if and only if

s.equals(t)

 is

true

.

All literal strings and string valued constant expressions are interned

( 3.10.5).

547