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Java Language


148 Topics

19 requests active popular

Getting started with Java Language Introduction Topic

229
Creating your first Java program
0 improvement requests
0 proposed changes
edited Dec 4 at 2:22
+23

Arrays All Versions

789
Creating and Initializing Arrays
122
Creating a List from an Array
16 more examples
0 improvement requests
0 proposed changes
edited 2 days ago
+212

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

207
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)

106
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

95
Comparing Strings
22
Changing the case of characters within a String
15 more examples
0 improvement requests
0 proposed changes
edited Dec 5 at 18:25
+126

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

49
Declaring and using a basic enum
29
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)

51
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

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 Sep 19 at 9:39
+21

Primitive Data Types All Versions

13
The char primitive
8
The float primitive
12 more examples
0 improvement requests
0 proposed changes
edited Dec 9 at 20:59
+40

Oracle Official Code Standard All Versions

22
Naming Conventions
12
Class Structure
16 more examples
0 improvement requests
0 proposed changes
edited Oct 31 at 17:36
+16

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
17 more examples
0 improvement requests
0 proposed changes
edited Dec 12 at 14:29
+49

Java Pitfalls All Versions

21
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 18 hours ago
+15

Documenting Java Code All Versions

16
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

36
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 Nov 18 at 3:47
+2

Interfaces All Versions

15
Implementing multiple interfaces
7
Declaring and Implementing an interface
7 more examples
0 improvement requests
0 proposed changes
edited Dec 10 at 16:08
+26

Singletons All Versions

17
Enum Singleton
13
Singleton without use of Enum (eager initialization)
2 more examples
0 improvement requests
0 proposed changes
edited Dec 10 at 16:08
+28

Inheritance All Versions

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

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

Operators All Versions

12
Increment/Decrement Operators (++/--)
10
Conditional Operator (? :)
9 more examples
0 improvement requests
0 proposed changes
edited 2 hours ago
+47
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Introduction Topic

 Getting started with Java Language