9. Write a method with the following header
public static void replace (String oldFile, string newfile,
char oldChar, char newChar) throws IOException
This method opens the file whose name is given by the String parameter oldFile (the input file)
for reading, and opens the file whose name is given by the string parameter newlile (the output
file) for writing. It then reads every lime in the input file. For each line, it creates a new line identical to
the original line, creept for the fact that all occurrences of char oldchar in the original String
have been replaced by occurrences of char newchar in the new line. When the new line has been
properly created, it write it to the output file. Once all the lines in the input file have been read and a
corresponding line has been written to the output file, the method clases both files.
Additional notes:
• You MAY assume that none of the parameters this method accepts are null; in other words,
your method does not have to handle the case where one or more of the parameters are null.
You MAY assume that all the 10-related classes have already heen imported properly
. Finally, because the replace() method is specified to throw an exception object of type
TORxception, you MAY assume that I/O related problems will occur while reading from
the input file or writing to the output file. In other words, your method DOES NOT have to check
that no such problems occur, and DOES NOT have to manage Texceptions using try-catch
blocks.
WRITE YOUR replace() METHOD IN THE SPACE BELOW:
YOUR replace() METHOD CONTINUED:
USE THIS PAGE IF YOU NEED ADDITIONAL SPACE. CLEARLY INDICATE WHICH QUESTION(S)
YOU ARE ANSWERING HERE.
USE THIS PAGE IF YOU NEED MORE ADDITIONAL SPACE. CLEARLY INDICATE WHICH QUES-
TION(S) YOU ARE ANSWERING HERE.
• String (package java.lang) Methods:
- public String chal wale Al
t ri
g od
med in the chance au
- public int length():
R
e ach of the string
- public char chattin
R
echar
w heefd index
public chart to Chachay: Consthis String to a new
c r y
- public boolean equals Object anbject): Ce this string to and yect
- public boolean equalsigmoce Case String anotherstring]: Cam p ing sider
this String to anotherString
- public int compareToString anotherString: Compare this String to anotherstring
graphically returns a negative ef this string before anotherstring, apithe value of this
Stringatering distries
publie iw paneelgoro (String another Camp i ng Garden
ces, string to anoth i ng li hically returns te value of this thing care
anotherstring, apie as if this string e r anotherstring,
Strings
- public int indexin ch Rather within this string of the
och
ch-lil does not
- public int index fint.ch, int from index): Returns the index within this string of the first
Roe of character ch, starting the search at position from Index retums - 1 il ch does not in this
String
- public int indexor (String ste): Returns the index within this string of the first currence of
ringt-d
eur
- public int indexOf(stringate, int from index): Resures the index within the string of the
fare currence of shariaparting police froiden liste des not count i ng
- public String subat ring it begintndax) Rema new string which is a webstring of this
string compend of the chesting at position begintndex (inclusive)
- puble string subat ring intaginindex intendindex: Returns a new sering that
waring of this string, composed of the characters starting at position beginIndex (inclusive, and ending at
- public String replace(char oldChar, char newchar): Returns a new string resulting from
replacing a Tences of olchar in this string with new Char.
puble string tolon Case(): Returns a new string consisting of all the characters in this sting
- publle ting toppe
: Roum ingiting of all the c on in this thing
uverted to perce
- publie ting tet): Returns a copy of this line with leading and wailing whitespace
• Scanner (package java.util) Methods:
- publie danner File source) thrown jatorio Foundation
sa
Scanner the
fun the specified file
- public scanner InputStream source): Cits Scanner that process and from
the
input stream
- puble Scannerstag source): Corsa ww Scanner that produces wales w ed from the
specified String
-puble vold close(): Cwes this Scanner
-puble boolean asext(): Return this can
het in its input
puble boolean asext.Double(): Return to the taken in this season al ante
pasadala
w ith Doble() ed
publie boolean hat Into: Reutte le inse
gule ed
wat
w
eet Int() had
- public boolean hati : Return true if this w ee
- puble boolean has longt) Return true if the r in this cannerm ane
das along
the next long) with
puble ting at
the t e rm from the canner
puble double
Smerthea ter
puble intention there the l ot.
puble w
ith the need
them
- puble Intolog
m
u
long
• Printstream (
kape Java.io) Methods:
a
-
Pri le rlle) throw alo.Pilo t
Pelat ihan the
p rile
- Printing the throw r alo.
Pet Stichw
e d the wind
- le void lose
them
- le void phone boolean ve
-
void prichar
public void print chart 6): the way of char
public void print double
d
o uble bed,
public void print (int ) Fins int value
- public void printet a n net
public void printing : Strings
- public void printin (1 Tm the line by writing the line para ring
- public void printinhoolna ) Prints hoolean when thinorminates the
public void printin (cthar
c
h ar wheelthening the line
public void print in char i ta way of cars and then
the line
public void print in double d in double valued and the terminates the line
public void printin(int 1) Pints int value and then into the line
public void printin ( jat ova t
terminates the line
pulle void print intring): Tits Strings then to the line
Note that the printwriter class defines the same methods and constructors (except for the fact
that the structors are called Print.writer instead of PrintStream)
• Math (package java.lang) Methods:
- please le podle double bear the value of
a t the of
- puble balle blanche a Returns they u se of dele
with pe
r
than realto
- pietate double random Ruma doble
0.0 wi th ..
puble stat la doble sin double a: Rethe
puble statie doble con double a Return ther
l e, where a ininin
we angle, wherea in in
e
-puble statie doble tan double a)
R
he
i ngold
, whereas
o m
public statie double toeges double agrad):
C
a ngrad
v
ideo
puble salle de anable and we
a
r e
-
-
estatie delle au
t olewa
idle de ahholooble
• Character (packape java.lang) Methods:
- public static boolean ibigit charch:
D
i chtechisadil
public static int digit(charch, int radix: Return the meal of cho ch in the
di radix-lich des representa digit
- public statie char forbigit chat digit, ut radix) Rems the character
of
digit in the disa
- public statie boolean isletter charch): Demines if character chalet
publle statie boolean islowerCase(char ch): Determines if character ch is a
character
- public static boolean ipparate(char eh): Determines ir ductes chinuppercase cura
nd
- publicatie boliwhip (arch Termine if character his white a
intola
- public static char tolowrane(char chevert hech to low
- public static char tolpperCase(char ch): Covers Chococh topp
• Array list
(package java.util) Methods:
- public ArrayList(): Create a new em ArrayList which contains clements of type
- public int (1 :
R m the number of clans in this list
- public boolean isimpty(): Rens true if this in contains no elements
- public boolean contains (object o): Return true if this lintutins el compr a re
performed using the equals() method on
- public int IndexOf(obj ): Returns the index of the first currence of elemento in this list, or lir
this listes contain this element companies are performed wing the equals() method
- publiek galimt in ): Returns the elementat position index in this list
- publieket fint inde element): Replace the element at the position index in this list with the
- puble honlanad a ): Appends the specifiedalent to the end of this list.
- public void (int in aw e t the specified element the price index in this
- publiek veint index): Remove the de s ition index in the list
- publie hoolean remove(object
a
s the fir e of the president of this
if it is
p
r epared wing the equals() methodno
- public void clear(): Remes all of the elements from this
• Vile (package java.io) Methods:
- puble File(String pathname: Creates a File representing the file at the given pathane
