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Java Language


144 Topics

22 requests active popular

Getting started with Java Language Introduction Topic

227
Creating your first Java program
0 improvement requests
0 proposed changes
edited Dec 4 at 2:22
+23

Arrays All Versions

788
Creating and Initializing Arrays
122
Creating a List from an Array
16 more examples
0 improvement requests
0 proposed changes
edited Dec 5 at 17:59
+211

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

205
Using Streams
57
Consuming Streams
25 more examples
0 improvement requests
0 proposed changes
edited Nov 28 at 10:11
+90

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

106
Introduction to Java lambdas
62
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)

48
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)

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 Nov 5 at 2:16
+53

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

32
Map
30
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

21
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 Nov 23 at 16:57
+39

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

29
Removing items from a List within a loop
8
Constructing collections from existing data
17 more examples
0 improvement requests
0 proposed changes
edited Nov 21 at 12:05
+47

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 Nov 15 at 1:16
+13

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 Nov 30 at 4:52
+25

Singletons All Versions

17
Enum Singleton
13
Singleton without use of Enum (eager initialization)
2 more examples
0 improvement requests
0 proposed changes
edited 11 hours ago
+26

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

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
Ternary Operator (? :)
9 more examples
0 improvement requests
0 proposed changes
edited 2 days ago
+47
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Introduction Topic

 Getting started with Java Language