-
Notifications
You must be signed in to change notification settings - Fork 2
Expand file tree
/
Copy pathencapsulation-java.html
More file actions
629 lines (535 loc) · 32.4 KB
/
encapsulation-java.html
File metadata and controls
629 lines (535 loc) · 32.4 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
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
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
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
258
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
312
313
314
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
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<meta name="description" content="Encapsulation simply means binding object state(fields) and behaviour(methods) together. If you are creating class, you are doing encapsulation.The whole idea behind encapsulation is to hide the implementation details from users. If a data member is private it means it can only be accessed within the same class. No outside class can access private data member (variable) of other class.This way data can only be accessed by public methods thus making the private fields and their implementation hidden for outside classes.Example of Encapsulation in Java"/>
<meta name="keywords" content="Java Encapsulation,Encapsulation in Java,what is Encapsulation in java?, about Encapsulation,C, C++, Python, Java, HTML, CSS, JavaScript, SQL, PHP, jQuery, XML, DOM, Bootstrap, Tutorials, Articles, Programming, training, learning, quiz, preferences, examples, code"/>
<title>Exceptions in Java | Java Tutorials | CodeMistic</title>
<!-- Google Tag Manager -->
<script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
})(window,document,'script','dataLayer','GTM-MCNC43J');</script>
<!-- End Google Tag Manager -->
<!-- Global site tag (gtag.js) - Google Analytics -->
<script async src="https://www.googletagmanager.com/gtag/js?id=G-YPTQSLH0XW"></script>
<script>
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments);}
gtag('js', new Date());
gtag('config', 'G-YPTQSLH0XW');
</script>
<script data-ad-client="ca-pub-5352867889640158" async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
<!-- Favicon -->
<link rel="icon" type="img/png" href="../favicon.png"/>
<!-- FONT AWESOME -->
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.13.1/css/all.css"
integrity="sha384-xxzQGERXS00kBmZW/6qxqJPyxW3UR0BPsL4c8ILaIWXva5kFi7TxkIIaMiKtqV1Q" crossorigin="anonymous"/>
<!-- FONTS -->
<link href="https://fonts.googleapis.com/css2?family=Kalam:wght@700&family=Ubuntu&family=Varela+Round&display=swap"
rel="stylesheet"/>
<!-- Bootstrap -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity=""
crossorigin="anonymous"/>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity=""
crossorigin="anonymous"/>
<!-- CSS -->
<link rel="stylesheet" href="../lang_styles.css"/>
</head>
<body>
<!-- Google Tag Manager (noscript) -->
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-MCNC43J"
height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
<!-- End Google Tag Manager (noscript) -->
<!-- NAVIGATION BAR -->
<nav class="navbar fixed-top navbar-expand-xl navbar-dark">
<a class="navbar-brand" href="../index.html">CODEMISTIC</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav ml-auto">
<li class="nav-item">
<a class="nav-link" href="../index.html">Home</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button"
data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Tutorials
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="../cpp.html">C++</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="../python.html">Python</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="../java.html">Java</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="../dsa.html">Data Structure and Algorithms</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="../tutorials.html">All Tutorials</a>
</div>
</li>
<li class="nav-item">
<a class="nav-link" href="../events.html">Events</a>
</li>
<li class="nav-item">
<a class="nav-link" href="../teen-code.html">Teen-Code</a>
</li>
<li class="nav-item">
<a class="nav-link" href="../campus.html">Campus Programme</a>
</li>
<!-- <li class="nav-item">
<a class="nav-link" href="https://docs.google.com/forms/d/e/1FAIpQLSc2O28YJpxQc6kh2tKpI_Lf5MwfwGXVnhMs0g5EEXobJ4Beeg/viewform?usp=sf_link" target="_blank">Contribute</a>
</li> -->
<li class="nav-item">
<a class="nav-link" href="../register.html">Join Our Community</a>
</li>
</ul>
</div>
</nav>
<!-- Accordion -->
<section class="lbar">
<div class="lang-img col-md-2">
<img src="../logo/java.png" alt="dsa" class="cpp-img">
</div>
<ul id="accordion" class="accordion ml-5">
<li class=" collapse in">
<div class="link">Java Introduction<i class="fa fa-chevron-down"></i>
</div>
<ul class="submenu collapse ">
<li>
<a href=" hello-world-java.html" class="closed" >Java Hello World</a>
</li>
<li>
<a href="JVM-JRE-JDK-java.html" class="closed">Java JVM, JRE and JDK</a>
</li>
<li>
<a href="data-types-java.html" class="closed">Java Data Types</a>
</li>
<li>
<a href="operators-java.html" class="closed">Java Operators</a>
</li>
<li>
<a href="input-and-output-java.html" class="closed">Java Input and Output</a>
</li>
<li>
<a href="expressions-and-blocks-java.html" class="closed">Java Expressions & Blocks</a>
</li>
<li>
<a href="comment-java.html" class="closed">Java Comment</a>
</li>
</ul>
</li>
<li>
<div class="link">Java Flow Control<i class="fa fa-chevron-down"></i>
</div>
<ul class="submenu collapse ">
<li><a href="if-else-java.html" class="closed">Java if...else</a></li>
<li><a href="switch-statement-java.html" class="closed">Java switch Statement</a></li>
<li><a href="for-loop-java.html" class="closed">Java for Loop</a></li>
<li><a href="for-else-loop-java.html" class="closed">Java for-else Loop</a></li>
<li><a href="while-loop-java.html" class="closed">Java while Loop</a></li>
<li><a href="break-statement-java.html" class="closed">Java break Statement</a></li>
<li><a href="continue-statement-java.html" class="closed">Java continue Statement</a></li>
</ul>
</li>
<li>
<div class="link">Java Arrays<i class="fa fa-chevron-down"></i>
</div>
<ul class="submenu collapse">
<li><a href="arrays-java.html" class="closed" >Java Arrays</a></li>
<li><a href="multidimensional-array-java.html" class="closed">Multidimensional Array</a></li>
<li><a href="copy-arrays-java.html" class="closed" >Java Copy Arrays</a></li>
</ul>
</li>
<li>
<div class="link">Java OOP(I)<i class="fa fa-chevron-down"></i>
</div>
<ul class="submenu collapse ">
<li><a href="class-objects-java.html" class="closed"> Java Class and Objects</a></li>
<li><a href="methods-java.html" class="closed">Java Methods</a></li>
<li><a href="constructor-java.html" class="closed"> Java Constructor</a></li>
<li><a href="string-java.html" class="closed"> Java String</a></li>
<li><a href="access-modifiers-java.html" class="closed"> Java Access Modifiers</a></li>
<li><a href="this-keyword-java.html" class="closed"> Java this Keyword</a></li>
<li><a href="final-keyword-java.html" class="closed"> Java final Keyword</a></li>
<li><a href="recursion-java.html" class="closed"> Java Recursion</a></li>
<li><a href="instance-of-operator-java.html" class="closed"> Java instanceOf Operator</a></li>
</ul>
</li>
<li>
<div class="link">Java OOP(II)<i class="fa fa-chevron-down"></i>
</div>
<ul class="submenu collapse show ">
<li><a href="inheritance-java.html" class="closed">Java Inheritance</a></li>
<li><a href="methods-overriding-java.html" class="closed">Java Methods Overriding </a></li>
<li><a href="super-keyword-java.html" class="closed">Java Super Keyword</a></li>
<li><a href="abstract-class-method-java.html" class="closed">Abstract Class & Method</a></li>
<li><a href="interfaces-java.html" class="closed">Java Interfaces</a></li>
<li><a href="polymorphism-java.html" class="closed">Java Polymorphism</a></li>
<li><a href="encapsulation-java.html" class="opened">Java Encapsulation</a></li>
</ul>
</li>
<li>
<div class="link">Java OOP(III)<i class="fa fa-chevron-down"></i>
</div>
<ul class="submenu collapse">
<li><a href="nested-inner-class-java.html" class="closed">Nested & Inner Class</a></li>
<li><a href="static-class-java.html" class="closed">Java Static class </a></li>
<li><a href="anonymous-java.html" class="closed">Java Anonymous</a></li>
<li><a href="singleton-java.html" class="closed">Java Singleton</a></li>
<li><a href="enum-class-java.html" class="closed">Java enum Class </a></li>
<li><a href="enum-constructor-java.html" class="closed">Java enum Constructor</a></li>
<li><a href="enum-string-java.html" class="closed">Java enum String</a></li>
<li><a href="reflection-java.html" class="closed">Java Reflection</a></li>
</ul>
</li>
<li>
<div class="link">Java Exception Handling<i class="fa fa-chevron-down"></i>
</div>
<ul class="submenu collapse ">
<li><a href="exceptions-java.html" class="closed" >Java Exceptions</a>
</li>
<li><a href="exception-handling-java.html" class="closed" >Java Exception Handling</a>
</li>
<li> <a href="throw-throws-java.html" class="closed" >Java throw and throws</a>
</li>
<li><a href="catch-multiple-exceptions-java.html" class="closed" >Java catch Multiple Exceptions</a>
</li>
<li ><a href="try-with-resources-java.html" class="closed" >Java try-with-resources</a>
</li>
<li ><a href="annotation-java.html" class="closed" >Java Annotation</a>
</li>
<li><a href="logging-java.html" class="closed" >Java Logging</a>
</li>
<li><a href="assertions-java.html" class="closed" >Java Assertions</a>
</li>
</ul>
</li>
<li>
<div class="link">Java List<i class="fa fa-chevron-down"></i>
</div>
<ul class="submenu collapse">
<li><a href="collections-framework-java.html" class="closed" >Java Collections Framework</a></li>
<li><a href="collection-interface-java.html" class="closed" >Java Collection Interface</a></li>
<li><a href="list-interface-java.html" class="closed" >Java List Interface</a></li>
<li><a href="array-list-java.html" class="closed" >Java ArrayList</a ></li>
<li> <a href="vector-java.html" class="closed" >Java Vector</a></li>
<li> <a href="stack-java.html" class="closed" >Java Stack</a></li>
</ul>
</li>
<li>
<div class="link">Java Queue<i class="fa fa-chevron-down"></i>
</div>
<ul class="submenu collapse">
<li> <a href="queue-interface-java.html" class="closed">Java Queue Interface </a></li>
<li> <a href="priority-queue-java.html" class="closed">Java PriorityQueue </a></li>
<li> <a href="deque-interface-java.html" class="closed">Java Deque Interface </a></li>
<li> <a href="linked-list-java.html" class="closed">Java LinkedList </a></li>
<li> <a href="array-deque-java.html" class="closed">Java ArrayDeque </a></li>
<li> <a href="blocking-queue-interface-java.html"class="closed">Java BlockingQueue Interface </a></li>
<li> <a href="array-blocking-queue-java.html" class="closed">Java ArrayBlockingQueue </a></li>
<li> <a href="linked-blocking-queue-java.html" class="closed">Java LinkedBlockingQueue </a></li>
</ul>
</li>
<li>
<div class="link">Java Map<i class="fa fa-chevron-down"></i>
</div>
<ul class="submenu collapse">
<li><a href="map-interface-java.html" class="closed" >Java Map Interface</a> </li>
<li><a href="hashmap-java.html" class="closed" >Java HashMap</a> <li>
<li><a href="linked-hashmap-java.html" class="closed" >Java LinkedHashMap</a> <li>
<li><a href="weak-hashmap-java.html" class="closed" >Java WeakHashMap</a> <li>
<li><a href="enum-map-java.html" class="closed" >Java EnumMap</a> <li>
<li><a href="sorted-map-interface-java.html" class="closed" >Java SortedMap Interface</a> <li>
<li><a href="navigable-map-interface-java.html" class="closed" >Java NavigableMap Interface</a> <li>
<li><a href="tree-map-java.html" class="closed" >Java TreeMap</a> <li>
<li><a href="concurrent-map-interface-java.html" class="closed" >Java ConcurrentMap Interface</a> <li>
<li><a href="concurrent-hashmap-java.html" class="closed" >Java ConcurrentHashMap</a> <li>
</ul>
</li>
<li>
<div class="link">Java Set<i class="fa fa-chevron-down"></i>
</div>
<ul class="submenu collapse">
<li > <a href="set-interface-java.html" class="closed">Java Set Interface</a> </li>
<li><a href="hashset-java.html" class="closed">Java HashSet</a></li>
<li><a href="linked-hashset-java.html" class="closed">Java LinkedHashSet</a> </li>
<li><a href="enum-set-java.html" class="closed">Java EnumSet</a></li>
<li><a href="sorted-set-interface-java.html" class="closed">Java SortedSet Interface</a></li>
<li><a href="navigable-set-interface-java.html" class="closed">Java NavigableSet Interface</a></li>
<li><a href="tree-set-java.html" class="closed">Java TreeSet</a></li>
<li><a href="algorithms-java.html" class="closed">Java Algorithms</a></li>
<li><a href="iterator-java.html" class="closed">Java Iterator</a></li>
<li><a href="list-iterator-java.html" class="closed">Java ListIterator</a></li>
</ul>
</li>
<li>
<div class="link">Java I/O Streams<i class="fa fa-chevron-down"></i>
</div>
<ul class="submenu collapse">
<li > <a href="I/O-streams-java.html" class="closed">Java I/O Streams</a> </li>
<li><a href="input-stream-java.html" class="closed">Java Input Stream</a></li>
<li><a href="output-stream-java.html" class="closed">Java Output Stream</a> </li>
<li><a href="file-input-stream-java.html" class="closed">Java FileInput Stream</a></li>
<li><a href="file-output-stream-java.html" class="closed">Java FileOutput Stream</a></li>
<li><a href="bytearray-input-stream-java.html" class="closed">Java ByteArrayInput Stream</a></li>
<li><a href="bytearray-output-stream-java.html" class="closed">Java ByteArrayOutput Stream</a></li>
<li><a href="object-input-stream-java.html" class="closed">Java ObjectInput Stream</a></li>
<li><a href="object-output-stream-java.html" class="closed">Java ObjectOutput Stream</a></li>
<li><a href="buffered-input-java.html" class="closed">Java BufferedInput</a></li>
<li><a href="buffered-output-java.html" class="closed">Java BufferedOutput</a></li>
<li><a href="print-input-java.html" class="closed">Java PrintInput</a></li>
</ul>
</li>
<li>
<div class="link">Java Reader/Writer<i class="fa fa-chevron-down"></i>
</div>
<ul class="submenu collapse">
<li > <a href="reader-java.html" class="closed">Java Reader</a> </li>
<li><a href="writer-java.html" class="closed">Java Writer</a></li>
<li><a href="input-stream-reader-java.html" class="closed">Java InputStreamReader</a> </li>
<li><a href="output-stream-writer-java.html" class="closed">Java OutputStreamWriter</a></li>
<li><a href="file-reader-java.html" class="closed">Java FileReader</a></li>
<li><a href="file-writer-java.html" class="closed">Java FileWriter</a></li>
<li><a href="buffered-reader-java.html" class="closed">Java BufferedReader</a></li>
<li><a href="buffered-writer-java.html" class="closed">Java BufferedWriter</a></li>
<li><a href="string-reader-java.html" class="closed">Java StringReader</a></li>
<li><a href="string-writer-java.html" class="closed">Java StringWriter</a></li>
<li><a href="print-writer-java.html" class="closed">Java PrintWriter</a></li>
</ul>
</li>
<li>
<div class="link">Additional Topics<i class="fa fa-chevron-down"></i>
</div>
<ul class="submenu collapse">
<li > <a href="scanner-class-java.html" class="closed">Java Scanner Class</a> </li>
<li><a href="type-casting-java.html" class="closed">Java Type Casting</a></li>
<li><a href="autoboxing-and-unboxing-java.html" class="closed">Java Autoboxing and Unboxing</a> </li>
<li><a href="lambda-expression-java.html" class="closed">Java Lambda Expression</a></li>
<li><a href="generics-java.html" class="closed">Java Generics</a></li>
<li><a href="file-class-java.html" class="closed">Java File Class</a></li>
<li><a href="wrapper-class-java.html" class="closed">Java Wrapper Class</a></li>
<li><a href="command-line-arguments-java.html" class="closed">Java Command line Arguments</a></li>
</ul>
</li>
</ul>
</section>
<br>
<section class="para">
<!-- <div class="but mt-4">
<button class="btn btn-md btn-primary "><a href="../dsa.html"><i
class="fas fa-arrow-left "></i> Back to Index</a></button>
</div> -->
<!-- breadcrumb -->
<nav class="bdcrumb" id="bdcrumb" aria-label="breadcrumb">
<ul class="breadcrumb">
<li class="breadcrumb-item"><a href="../tutorials.html"><i class="fas fa-home"></i></a></li>
<li class="breadcrumb-item"><a href="../java.html#languages">Java Index</a></li>
<li class="breadcrumb-item active" aria-current="page">Java Encapsulation</li>
</ul>
</nav>
<!-- breadcrumb ending -->
<!-- para-->
<div class="wrapper">
<h3>Java Encapsulation</h3>
<h4>Introduction :</h4><p>In this tutorial, you will learn about encapsulation and data hiding in Java with the help of examples.</p>
<h4>What is Encapsulation ?</h4>
<p>Encapsulation simply means binding object state(fields) and behaviour(methods) together. If you are creating class, you are doing encapsulation.</p>
<p>The whole idea behind encapsulation is to hide the implementation details from users. If a data member is private it means it can only be accessed within the same class. No outside class can access private data member (variable) of other class.</p>
<p>This way data can only be accessed by public methods thus making the private fields and their implementation hidden for outside classes.</p>
<h4>Example of Encapsulation in Java</h4>
<p>How to implement encapsulation in java:</p>
<ol><li>Make the instance variables private so that they cannot be accessed directly from outside the class. You can only set and get values of these variables through the methods of the class.</li><li>Have getter and setter methods in the class to set and get the values of the fields.</li></ol>
<pre><code>
class EncapsulationDemo
{
private int empId;
private String empName;
private int empAge;
//Getter and Setter methods
public int getEmpId()
{
return empId;
}
public String getEmpName()
{
return empName;
}
public int getEmpAge()
{
return empAge;
}
public void setEmpAge(int newValue)
{
empAge = newValue;
}
public void setEmpName(String newValue)
{
empName = newValue;
}
public void setEmpId(int newValue)
{
empId = newValue;
}
}
public class EncapsulationTest
{
public static void main(String args[])
{
EncapsulationDemo obj = new EncapsulationDemo();
obj.setEmpName("Arnav");
obj.setEmpAge(35);
obj.setEmpId(1001);
System.out.println("Employee Name: " + obj.getEmpName());
System.out.println("Employee Id: " + obj.getEmpId());
System.out.println("Employee Age: " + obj.getEmpAge());
}
}
<strong>Output :</strong>
Employee Name: Arnav
Employee Id: 1001
Employee Age: 35
</code></pre>
<p><strong>Note:</strong> In above example all the three data members (or data fields) are private(see: Access Modifiers in Java) which cannot be accessed directly. These fields can be accessed via public methods only. Fields empName, empId and empAge are made hidden data fields using encapsulation technique of OOPs.</p>
<h4>Advantages of Encapsulation</h4>
<ul><li><strong>Data Hiding:</strong> The user will have no idea about the inner implementation of the class. It will not be visible to the user that how the class is storing values in the variables. He only knows that we are passing the values to a setter method and variables are getting initialized with that value.</li><li><strong>Easy to test :</strong>The encapsulate class is easy to test. So, it is better for unit testing.</li><li><strong>Increased Flexibility:</strong> We can make the variables of the class as read-only or write-only depending on our requirement. If we wish to make the variables as read-only then we have to omit the setter methods like setName(), setAge() etc. from the above program or if we wish to make the variables as write-only then we have to omit the get methods like getName(), getAge() etc. from the above program</li><li><strong>Reusability:</strong> Encapsulation also improves the re-usability and easy to change with new requirements.</li></ul>
<h4>Data Hiding Vs. Encapsulation</h4>
<p>People often consider encapsulation as data hiding, but that’s not entirely true.</p>
<p>Encapsulation refers to the bundling of related fields and methods together. This allows us to achieve data hiding. Encapsulation in itself is not data hiding.</p>
<h4>Another Example of Encapsulation </h4>
<pre><code>
class Account
{
//private data members
private long acc_no;
private String name,email;
private float amount;
//public getter and setter methods
public long getAcc_no()
{
return acc_no;
}
public void setAcc_no(long acc_no)
{
this.acc_no = acc_no;
}
public String getName()
{
return name;
}
public void setName(String name)
{
this.name = name;
}
public String getEmail()
{
return email;
}
public void setEmail(String email)
{
this.email = email;
}
public float getAmount()
{
return amount;
}
public void setAmount(float amount)
{
this.amount = amount;
}
}
//A Java class to test the encapsulated class Account.
public class TestEncapsulation
{
public static void main(String[] args)
{
//creating instance of Account class
Account acc=new Account();
//setting values through setter methods
acc.setAcc_no(7560128450L);
acc.setName("Anvar Jasmit");
acc.setEmail("anvarjasmit@codemistic.in");
acc.setAmount(400000f);
//getting values through getter methods
System.out.println(acc.getAcc_no()+" "+acc.getName()+" "+acc.getEmail()+" "+acc.getAmount());
}
}
<strong>Output :</strong>
7560128450 Anvar Jasmit anvarjasmit@codemistic.in 400000.0
</code></pre>
<hr>
</div>
<div class="but text-right">
<button class="btn btn-primary pull-right"><a href="nested-inner-class-java.html">Next Topic <i
class="fas fa-arrow-right "></i><br/>Java Nested & Inner class</a></button>
</div><br>
</section>
<!-- footer -->
<footer >
<div class="row footer" >
<div class="logo">
<img src="../image.png" alt="" class="f-img">
<h5>LEARN CODE DISCUSS</h5>
</div>
<div class="footer-column ">
<ul class="footer-ul">
<li class="foot-header"><strong>CodeMistic</strong></li>
<li class="f-li"><a href="../index.html" class="f-links">Home</a></li>
<li class="f-li"><a href="../team.html" class="f-links">Our Team</a></li>
<li class="f-li"><a href="../terms-and-conditions.html" class="f-links">Terms of Service</a></li>
<li class="f-li"><a href="../privacy-policy.html" class="f-links">Privacy Policy</a></li>
</ul>
</div>
<div class="footer-column ">
<ul class="footer-ul ">
<li class="foot-header"><strong>LEARN</strong></li>
<li class="f-li"><a href="../cpp.html" class="f-links">C++</a></li>
<li class="f-li"><a href="../java.html" class="f-links">Java</a></li>
<li class="f-li"><a href="../python.html" class="f-links">Python</a></li>
<li class="f-li"><a href="../dsa.html" class="f-links">DSA</a></li>
</ul>
</div>
<div class="footer-column ">
<ul class="footer-ul ">
<li class="foot-header"><strong>CONTRIBUTE</strong></li>
<li class="f-li"><a href="https://docs.google.com/forms/d/e/1FAIpQLSduxk_aP9M1lqUAebQJwRXiVm2ukmdgv3T7gjBpOsr_gdeOcQ/viewform?usp=sf_link" class="f-links" target="_blank">Write an Article/Blog</a></li>
<li class="f-li"><a href="https://docs.google.com/forms/d/e/1FAIpQLSc2O28YJpxQc6kh2tKpI_Lf5MwfwGXVnhMs0g5EEXobJ4Beeg/viewform?usp=sf_link" class="f-links" target="_blank">Internships</a></li>
<li class="f-li"><a href="https://docs.google.com/forms/d/e/1FAIpQLSe9nr_Aw0fGIqm3_xWhqEzTr3UWdOFz-pvKpQvkAsosORYq9w/viewform?usp=sf_link" class="f-links" target="_blank">Videos</a></li>
<li class="f-li"><a href="https://docs.google.com/forms/d/e/1FAIpQLScOW3hJjxxwzPYL4u51oboc4T1aDtIUEIRa20hKPKu4UlcZAA/viewform?usp=sf_link" class="f-links" target="_blank">Donations/Funds</a></li>
</ul>
</div>
</div>
<div class="footer-links" style="text-align: center;">
<!-- <h7>Connect With Us</h7><br><br> -->
<a href="https://www.facebook.com/codemistic " target="_blank "><i class="icons fa-2x fab fa-facebook "
style="color:#3b5998; "></i></a>
<a href="https://www.instagram.com/codemistic " target="_blank "><i class="icons fa-2x fab fa-instagram "
style="color:#e95950; "></i></a>
<a href="https://www.twitter.com/codemistic " target="_blank "><i class="icons fa-2x fab fa-twitter "
style="color:#8accf5; "></i></a>
<a href="https://www.linkedin.com/company/codemistic " target="_blank "><i
class="icons fa-2x fab fa-linkedin " style="color:#88b3ee; "></i></a>
<a href="https://t.me/codemistic " target="_blank "><i class="icons fa-2x fab fa-telegram "
style="color:#65adda; "></i></a>
<a href="https://www.youtube.com/channel/UCS1Iv_kkgQGDwoXtvrlwlag " target="_blank "><i
class="icons fa-2x fab fa-youtube " style="color:red; "></i></a>
<p class="foot mt-3">© Copyright : <strong>CodeMistic</strong> All Rights Reserved.</p>
</div>
</footer>
<!-- CSS Scripts -->
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js "
integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj "
crossorigin="anonymous "></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js "
integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo "
crossorigin="anonymous "></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js "
integrity="sha384-OgVRvuATP1z7JjHLkuOU7Xw704+h835Lr+6QL9UvYjZE3Ipu6Tp75j7Bh/kR0JKI "
crossorigin="anonymous "></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js'></script>
<script src='../side.js'></script>
</body>
</html>