Description:
Read an array of bytes from the keyboard.
Enter some characters.
Read Bytes
You entered: Read Bytes
Description:
Demonstrate System.out.write()
X
Description:
Display a text file.
To use this program, specify the name of the file that you want to see. For example, to see a file called TEST.TXT, use the following command line.
java ShowFile TEST.TXT
Without usage of finally.
$ java ShowFile test.txt
Hi,
I am here to support the demonstration of
'FileInputStream`.
Happy learning... :)
Description:
This variation wraps the code that opens and accesses the file within a single try block. The file is closed by the finally block.
$ java ShowFile test.txt
Hi,
I am here to support the demonstration of
'FileInputStream`.
Happy learning... :)
Description:
To use this program, specify the name of the source file and destination file. For example, to copy a file called first.text to a file called second.txt, use the following command line.
java CopyFile first.txt second.txt
Nothing gets printed to the console but the contents of first.txt is successfully copied to second.txt.
$ java CopyFile first.txt second.txt
Description:
This version of the ShowFile program uses a try-with-resources statement to automatically close a file when it is no longer needed.
Hi,
I am here to support the demonstration of
'FileInputStream`.
Happy learning... :)
Description:
A version of CopyFile that uses try-with-resources. It demonstrates two resources (in this case files) being managed by a single try statement.
No output is seen on the console but text is copied from first.txt to second.txt file successfully.
$ java CopyFile first.txt second.txt
Description:
Write and then read back binary data.
$ java RWData | $XCLIP0
Writing 10
Writing 1023.56
Writing true
Writing 90.28
Reading 10
Reading 1023.56
Reading true
Reading 90.28
Description:
Try This 10-1 A file comparison Utility. Compare two files.
To use this program, specify the names of the files to be compared on the command line.
java CompFiles first.txt second.txt
$ java CompFiles file1.txt file2.txt
Files are the same.
$ java CompFiles file1.txt file3.txt
Files differ
$ java CompFiles file1.txt file4.txt
Files differ
Description:
Try This 10-1-1 A file comparison utility.
Compare two files and ignore the case of the letters during comparison.
To use this program, specify the names of files to be compared on the command line.
java CompFiles file1 file2
$ java CompFiles file1.txt file2.txt
Files are same.
$ java CompFiles file1.txt file3.txt
Files are same.
$ java CompFiles file1.txt file4.txt
File differ
Example: JBG_JBG_HS_Ch10_Exmp_11 | Try This 10-1-2 A file comparison Utility positions of differences.
Description:
Try This 10-1-2 A file comparison utility.
Compare two files. Display the position within the file where the files differ.
To use this program, specify the names of files to be compared on the command line.
java CompFiles file1 file2
$ java CompFiles file1.txt file2.txt
Files are same.
$ java CompFiles file1.txt file3.txt
Files are not same.
Positions with differences in the compared files:
29 63 129 166 260 286
$ java CompFiles file1.txt file4.txt
Files are not same.
Positions with differences in the compared files:
25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 43 45 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 77 78 79 80 81 82 83 84 85 86 87 90 91 92 93 94 95 96 97 98 99 101 102 104 105 106 107 108 109 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 166 167 168 169 170 171 172 173 174 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 192 193 195 196 197 198 199 200 201 202 203 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 313 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365
Description:
Demonstrate radom access files.
First value is 19.4
Second value is 10.1
Fourth value is 33.0
Here is every other value:
19.4 10.1 123.54 33.0 87.9 74.25
Description:
Use a BufferedReader to read characters from the console.
Enter characters, period to quit.
One Two.
O
n
e
T
w
o
.
Description:
Read a string from console using a BufferedReader.
Use readLine() from BufferedReader to read a line of text.
Enter lines of text.
Enter 'stop' to quit.
I am not gonna stop.
I am not gonna stop.
Will you stop?
Will you stop?
stop
stop
Description:
Demonstrate PrintWriter.
Using a PrintWriter.
10
123.65
10 + 123.65 is 133.65
Description:
A simple key-to-disk utility that demonstrates a FileWriter.
$ java KtoD
Enter text ('stop' to quit).
I am not going to stop
You stop
please stop
stop
$ ls
KtoD.class KtoD.java PW.class test.txt
$ cat test.txt
I am not going to stop
You stop
please stop
Description:
A simple disk-to-screen utility that demonstrates a FileReader.
$ java DtoS
I am not going to stop
You stop
please stop
Description:
This program averages a list of numbers entered by the user.
How many numbers will you enter: 5
Enter 5 values.
: 1.1
: 2.2
: 3.3
: 4.4
: 5.5
Average is 3.3
Description:
Try This 10-2
Creating a Disk-Based Help System.
Try this help system. Enter 'stop' to end.
Enter topic: for
for(init; condition; iteration) statement;
Enter topic: exit
Topic not found.
Enter topic: while
while(condition) statement;
Enter topic: if
if(condition) statement;
else statement;
Enter topic: stop
Topic not found.