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Java Language


155 Topics

17 requests active popular

Getting started with Java Language Introduction Topic

239
Creating your first Java program
0 improvement requests
0 proposed changes
edited Dec 4 at 2:22
+23

Arrays All Versions

790
Creating and Initializing Arrays
121
Creating a List from an Array
16 more examples
0 improvement requests
0 proposed changes
edited Dec 22 at 10:13
+214

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

208
Using Streams
57
Consuming Streams
25 more examples
0 improvement requests
0 proposed changes
edited Dec 12 at 12:24
+91

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

108
Introduction to Java lambdas
63
Using Lambda Expressions to Sort a Collection
10 more examples
0 improvement requests
0 proposed changes
edited Dec 1 at 15:29
+50

Strings All Versions

97
Comparing Strings
22
Changing the case of characters within a String
15 more examples
0 improvement requests
0 proposed changes
edited 2 days ago
+128

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

51
Declaring and using a basic enum
30
Enums with constructors
15 more examples
0 improvement requests
0 proposed changes
edited Dec 9 at 20:36
+52

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

52
Creating a Generic Class
28
The Diamond
12 more examples
0 improvement requests
0 proposed changes
edited Dec 19 at 0:10
+50

Exceptions and exception handling All Versions

43
Catching an exception with try-catch
16
Custom Exceptions
10 more examples
0 improvement requests
0 proposed changes
edited Dec 9 at 20:35
+53

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

33
Map
29
Null-safe chaining
7 more examples
1 improvement request
0 proposed changes
edited Dec 19 at 8:49
+22

Primitive Data Types All Versions

13
The char primitive
8
The float primitive
10 more examples
0 improvement requests
0 proposed changes
edited Dec 19 at 6:20
+40

Oracle Official Code Standard All Versions

24
Naming Conventions
12
Class Structure
16 more examples
0 improvement requests
0 proposed changes
edited Oct 31 at 17:36
+16

Java Pitfalls All Versions

22
Pitfall: using == to compare primitive wrappers objects such as Integer
12
Pitfall: using == to compare strings
6 more examples
0 improvement requests
0 proposed changes
edited 2 days ago
+17

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

30
Removing items from a List within a loop
9
Constructing collections from existing data
14 more examples
0 improvement requests
0 proposed changes
edited 2 days ago
+50

Documenting Java Code All Versions

17
Class Documentation
12
Method Documentation
6 more examples
0 improvement requests
0 proposed changes
edited Sep 21 at 16:33
+12

Installing Java (Standard Edition) All Versions

37
Setting %PATH% and %JAVA_HOME% after installing on Windows
5
Installing a Java JDK on Linux
10 more examples
0 improvement requests
0 proposed changes
edited yesterday
+4

Singletons All Versions

19
Enum Singleton
14
Singleton without use of Enum (eager initialization)
2 more examples
0 improvement requests
0 proposed changes
edited Dec 10 at 16:08
+28

Interfaces All Versions

15
Implementing multiple interfaces
7
Declaring and Implementing an interface
8 more examples
0 improvement requests
0 proposed changes
edited 12 hours ago
+28

Inheritance All Versions

18
Abstract Classes
9
Using 'final' to restrict inheritance and overriding
9 more examples
1 improvement request
0 proposed changes
edited Dec 10 at 20:18
+41

Operators All Versions

13
Increment/Decrement Operators (++/--)
10
Conditional Operator (? :)
9 more examples
0 improvement requests
0 proposed changes
edited Dec 16 at 0:32
+47

Object Class Methods and Constructor All Versions

20
hashCode() method
9
toString() method
6 more examples
0 improvement requests
0 proposed changes
edited Dec 3 at 16:31
+34
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Introduction Topic

 Getting started with Java Language