Summary of Classes and Interfaces - Absolute Java - page 1189

Random
Package: java.util
Ancestor classes:
Object
|
+--Random
public Random()
Creates a new random number generator.
public Random( long seed)
Creates a new random number generator with the specifi ed seed value.
public int nextInt( int n)
Returns a pseudo-random, uniformly distributed int value between 0 (inclusive) and the
value n (exclusive).
public double nextDouble( double n)
Returns a pseudo-random, uniformly distributed double value between 0 (inclusive) and
1 (exclusive).
RandomAccessFile
Package: java.io
Object
|
+--RandomAccessFile
public RandomAccessFile(String fileName, String mode)
public RandomAccessFile(File fileObject, String mode)
Opens the fi le, does not delete data already in the fi le, but does position the fi le pointer at the
fi rst (zeroth) location.
The mode must be one of the following:
"r" Open for reading only.
"rw" Open for reading and writing.
"rws" Same as "rw" , and also requires that every update to the fi le's content or metadata be
written synchronously to the underlying storage device.
"rwd" Same as "rw" , and also requires that every update to the fi le's content be written
synchronously to the underlying storage device.
"rws" and "rwd" are not covered in this topic text.
public void close() throws IOException
Closes the stream's connection to a fi le.