Gain insights into Java programming by exploring conditional statements, loops, math, logic, inheritance, generics, and arraylists, to become an intermediate Java developer.

Learn Java for free with this interactive course, and get a handle on one of the most popular programming languages in the world.

You'll start with a simple hello world program and proceed to cover common concepts such as Conditional Statements, Loop Statements, Math, and Logic in Java, before moving on to more advanced concepts like Inheritance, Generics, and ArrayLists, along with much more.

By the time you're done, you'll be an intermediate level Java developer, ready to take on your own projects.

Learn Intermediate Java

A Generic Template allows code to be written for different data types.

A single function can be used for all data types including user defined types.

One class can be used for all data types including user defined types.

Which of the following is true about Generics?


Which of the following is true about Generics?

Which keyword can be used in Generics?

Compiler Error in last `print` statement as call to maximum is ambiguous

What is the output of the following program?
```
class GetMax {
 public static <T extends Comparable<T>> T maximum (T a, T b)
 {
 if(a.compareTo(b) > 0) 
 return a;
 else 
 return b;
 }
 public static void main( String args[] ) 
 {
 System.out.println(maximum(4, 6));
 System.out.println(maximum(4.0, 6.1));
 System.out.println(maximum(4, 6.7));
 }
}
```

What is the output of the following program?
<pre><code>class GetMax {
 public static &lt;T extends Comparable&lt;T&gt;&gt; T maximum (T a, T b)
 {
 if(a.compareTo(b) &gt; 0) 
 return a;
 else 
 return b;
 }
 public static void main( String args[] ) 
 {
 System.out.println(maximum(4, 6));
 System.out.println(maximum(4.0, 6.1));
 System.out.println(maximum(4, 6.7));
 }
}
</code></pre>

What is the output of the following program?

```
class Score <T>
{
 T value;
 public int counter = 0;
 public Score() {counter++;}
 public Score(T v) { value = v; counter++;}
};

class Main
{
 public static void main(String args[]) 
 {
 Score <Integer> x = new Score <Integer>();
 Score <Integer> y = new Score <Integer>();
 Score <Double> z = new Score <Double> ();

 System.out.println(x.counter);
 System.out.println(y.counter);
 System.out.println(z.counter);

 }
}
```

What is the output of the following program?
<pre><code>class Score &lt;T&gt;
{
 T value;
 public int counter = 0;
 public Score() {counter++;}
 public Score(T v) { value = v; counter++;}
};

class Main
{
 public static void main(String args[]) 
 {
 Score &lt;Integer&gt; x = new Score &lt;Integer&gt;();
 Score &lt;Integer&gt; y = new Score &lt;Integer&gt;();
 Score &lt;Double&gt; z = new Score &lt;Double&gt; ();

 System.out.println(x.counter);
 System.out.println(y.counter);
 System.out.println(z.counter);

 }
}
</code></pre>

A generic class declaration looks like a non-generic class declaration, except that the class name is followed by a `type` parameter section.

A generic class declaration looks like a non-generic class declaration, except that the class name is followed by a <code>type</code> parameter section.

With generic methods, the type parameter section of a generic class can NOT have one or more type parameters separated by commas.

With generic methods, the type parameter section of a generic class can NOT have one or more type parameters separated by commas.

What are the benefits of Generics in Java?

What are the benefits of Generics in Java?

Generics can be used for more than one types defined in the form of comma separated list in the class / function header. 

```
public static <A,B,C> void MultipleTypesFunction(A x, B y, C z) 
{
	System.out.println( x + " is Type A");
 System.out.println( y + " is Type B");
	System.out.println( z + " is Type C");
}
```

Generics can be used for more than one types defined in the form of comma separated list in the class / function header.
<pre><code>public static &lt;A,B,C&gt; void MultipleTypesFunction(A x, B y, C z) 
{
	System.out.println( x + &quot; is Type A&quot;);
 System.out.println( y + &quot; is Type B&quot;);
	System.out.println( z + &quot; is Type C&quot;);
}
</code></pre>

Here is a quick quiz to check your understanding of Generics.

Getting Started with Java!

Variables & User Input

Simple Maths & Logic

Strings and String Processing

Conditional Statements

Loops

Methods

Arrays

Classes and Inheritance

Generics

ArrayLists

Java Exam

Quick Quiz!