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14203985
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2013-01-07T21:03:46.983
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2013-01-07T21:13:53.793
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2013-01-07T21:13:53.793
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1911306
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1911306
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14130488
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2
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text
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<h2>Why it does not work?</h2> <p>You have to add return types to <code>getAge()</code> and <code>setAge()</code>.</p> <p><a href="http://docs.oracle.com/javase/specs/jls/se7/html/jls-8.html" rel="nofollow noreferrer">Java Language Specification</a> notes that method declaration should follow this format:</p> <p>MethodModifiers(optional) TypeParameters(optional) Result MethodDeclarator Throws(optional)</p> <p>Relax, lets look at this slowly:</p> <ul> <li>MethodModifiers(optional) - You can mark each method as private/public/protected. If you omit this parameter method is package. There are few more modifiers, but these are most interesting for You now</li> <li>TypeParameters(optional) - It is about generic methods. You can safely skip this one now</li> <li>Result - This one is important. Every method must explicitly say what it returns. This was missing in Your example.</li> <li>MethodDeclarator - name of Your method.</li> <li>Throws(optional) - if Your method will throw exceptions You have to write it here. For now You can safely skip it.</li> </ul> <p><img src="https://i.stack.imgur.com/wIBfd.gif" alt="enter image description here"></p> <h2>Just show me the working code!</h2> <pre><code>public class Puppy{ int puppyAge; public Puppy(String name){ // This constructor has one parameter, name. System.out.println("Passed Name is :" + name ); } public void setAge( int age ){ puppyAge = age; } public int getAge( ){ System.out.println("Puppy's age is :" + puppyAge ); return puppyAge; } public static void main(String []args){ /* Object creation */ Puppy myPuppy = new Puppy( "tommy" ); /* Call class method to set puppy's age */ myPuppy.setAge( 2 ); /* Call another class method to get puppy's age */ myPuppy.getAge( ); /* You can access instance variable as follows as well */ System.out.println("Variable Value :" + myPuppy.puppyAge ); } } </code></pre>
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