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Java Language


145 Topics

21 requests active popular

Getting started with Java Language Introduction Topic

206
Creating your first Java program
0 improvement requests
0 proposed changes
edited Oct 24 at 16:45
+23

Arrays All Versions

779
Creating and Initializing Arrays
121
Creating a List from an Array
16 more examples
0 improvement requests
0 proposed changes
edited 18 hours ago
+211

Streams Java SE 8–Java SE 9 (Early Access)

194
Using Streams
55
Consuming Streams
25 more examples
0 improvement requests
0 proposed changes
edited Nov 15 at 7:14
+89

Lambda Expressions Java SE 8–Java SE 9 (Early Access)

96
Introduction to Java lambdas
59
Using Lambda Expressions to Sort a Collection
10 more examples
0 improvement requests
0 proposed changes
edited 16 hours ago
+49

Strings All Versions

93
Comparing Strings
22
Changing the case of characters within a String
15 more examples
0 improvement requests
0 proposed changes
edited Nov 14 at 22:04
+123

Enums Java SE 5–Java SE 9 (Early Access)

46
Declaring and using a basic enum
27
Enums with constructors
15 more examples
0 improvement requests
0 proposed changes
edited Nov 4 at 13:39
+51

Generics Java SE 5–Java SE 9 (Early Access)

50
Creating a Generic Class
28
Diamond operator
12 more examples
0 improvement requests
0 proposed changes
edited Nov 13 at 20:52
+48

Exceptions and exception handling All Versions

41
Catching an exception with try-catch
16
Custom Exceptions
10 more examples
0 improvement requests
0 proposed changes
edited Nov 5 at 2:16
+53

Optional Java SE 8–Java SE 9 (Early Access)

31
Map
28
Null-safe chaining
7 more examples
1 improvement request
0 proposed changes
edited Sep 19 at 9:39
+21

Oracle Official Code Standard All Versions

19
Naming Conventions
12
Class Structure
16 more examples
0 improvement requests
0 proposed changes
edited Oct 31 at 17:36
+16

Primitive Data Types All Versions

12
The char primitive
7
The float primitive
12 more examples
0 improvement requests
0 proposed changes
edited 17 hours ago
+38

Collections Java SE 1.2–Java SE 9 (Early Access)

27
Removing items from a List within a loop
8
Constructing collections from existing data
17 more examples
0 improvement requests
0 proposed changes
edited Oct 2 at 14:17
+46

Documenting Java Code All Versions

16
Class Documentation
11
Method Documentation
6 more examples
0 improvement requests
0 proposed changes
edited Sep 21 at 16:33
+12

Installing Java (Standard Edition) All Versions

34
Setting %PATH% and %JAVA_HOME% after installing on Windows
4
Installing a Java JDK on Linux
10 more examples
0 improvement requests
0 proposed changes
edited 4 hours ago
+2

Java Pitfalls All Versions

16
Pitfall: using == to compare primitive wrappers objects such as Integer
10
Pitfall: using == to compare strings
6 more examples
0 improvement requests
0 proposed changes
edited Nov 15 at 1:16
+13

Interfaces All Versions

13
Implementing multiple interfaces
7
Declaring and Implementing an interface
7 more examples
0 improvement requests
0 proposed changes
edited Nov 12 at 21:05
+22

Inheritance All Versions

18
Abstract Classes
9
Using 'final' to restrict inheritance and overriding
9 more examples
0 improvement requests
0 proposed changes
edited Oct 27 at 9:31
+40

Singletons All Versions

17
Enum Singleton
12
Singleton without use of Enum (eager initialization)
3 more examples
0 improvement requests
0 proposed changes
edited Oct 28 at 14:39
+24

Operators All Versions

12
Increment/Decrement Operators (++/--)
10
Ternary Operator (? :)
13 more examples
0 improvement requests
0 proposed changes
edited Oct 26 at 14:16
+46

Object Class Methods and Constructor All Versions

18
hashCode() method
9
toString() method
6 more examples
0 improvement requests
0 proposed changes
edited Oct 27 at 10:34
+32
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Introduction Topic

 Getting started with Java Language