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Java Programming Learning - Basics of Language
Java Building Block
- Operators & Statement
- Core Java APIs
- Class Design
- Exceptions
Java is an object-oriented language,
which also has concepts
from imperative programming.
Object orientation means
(quite roughly)
that one tries to model a program as in the
"real" world with the help of objects
that interact with one another.
Imperative programming means
giving the computer a set
of instructions that determine
the order in which to do it.
Through the interaction of these two paradigms,
Java became one of the most
successful and most widely used languages ever.
From other well-known languages
such as C and C ++,
Java is bounded by a lack of some
error-prone concepts such as manual
memory management and pointer arithmetic.
This makes it easier for beginners
to learn Java programming.
The programming language is
a component of Java technology,
which basically consists of the
Java development tool (JDK)
for creating Java programs and the
Java Runtime Environment (JRE) for its execution.
The runtime environment itself includes the
virtual machine (JVM)
and the supplied libraries.
Java as a programming language
must not be equated with Java technology,
Java runtime environments are followed by bytecode,
which can be compiled in addition
to the Java programming language
In principle, any programming
language could be used as the
basis for Java bytecode,
but usually no corresponding
bytecode compiler exists.
The programming language Java is mainly used
in Java technology to formulate programs.
These are initially available as pure,
human-readable text, as so-called source code.
This source code is not directly executable;
Only the Java compiler, which is part
of the development tool,
translates it into a machine-compliant code,
the so-called Java bytecode.
However, the machine that performs this byte code is
typically virtual - that is, the code is usually not executed
directly by hardware (such as a microprocessor),
but by appropriate software on
the target platform.
The purpose of this virtualization is platform-independent:
the program should be able
to run on any computer architecture
without further modification
if a suitable runtime environment is installed there.
Oracle itself offers runtime environments for
the operating systems Linux, macOS,
Solaris and Windows. Other vendors have their
own Java runtime environments certified for their platform.
Java is also used in cars, hi-fi systems and other electronic devices.
Complete Java (OCA):
Oracle Certified Associate SE 8 Programmer 1 Course
is covered in the below mentioned Contents.
which also has concepts
from imperative programming.
Object orientation means
(quite roughly)
that one tries to model a program as in the
"real" world with the help of objects
that interact with one another.
Imperative programming means
giving the computer a set
of instructions that determine
the order in which to do it.
Through the interaction of these two paradigms,
Java became one of the most
successful and most widely used languages ever.
From other well-known languages
such as C and C ++,
Java is bounded by a lack of some
error-prone concepts such as manual
memory management and pointer arithmetic.
This makes it easier for beginners
to learn Java programming.
The programming language is
a component of Java technology,
which basically consists of the
Java development tool (JDK)
for creating Java programs and the
Java Runtime Environment (JRE) for its execution.
The runtime environment itself includes the
virtual machine (JVM)
and the supplied libraries.
Java as a programming language
must not be equated with Java technology,
Java runtime environments are followed by bytecode,
which can be compiled in addition
to the Java programming language
In principle, any programming
language could be used as the
basis for Java bytecode,
but usually no corresponding
bytecode compiler exists.
The programming language Java is mainly used
in Java technology to formulate programs.
These are initially available as pure,
human-readable text, as so-called source code.
This source code is not directly executable;
Only the Java compiler, which is part
of the development tool,
translates it into a machine-compliant code,
the so-called Java bytecode.
However, the machine that performs this byte code is
typically virtual - that is, the code is usually not executed
directly by hardware (such as a microprocessor),
but by appropriate software on
the target platform.
The purpose of this virtualization is platform-independent:
the program should be able
to run on any computer architecture
without further modification
if a suitable runtime environment is installed there.
Oracle itself offers runtime environments for
the operating systems Linux, macOS,
Solaris and Windows. Other vendors have their
own Java runtime environments certified for their platform.
Java is also used in cars, hi-fi systems and other electronic devices.
Complete Java (OCA):
Oracle Certified Associate SE 8 Programmer 1 Course
is covered in the below mentioned Contents.
These chapters above and below are organised as follows:
Chapter 1,
Java Building Blocks, covers the basic of Java
such as Scoping variable
and how to run a program.
It also includes calling methods and types of variable.
Chapter 2,
Operations and Statements,
focuses on the core logical constructs such as
conditions and loops.
It also talks about the meaning and
precedence of Operators.
Chapter 3,
Core Java APIs, introduces you to arrays,
Arraylist, String, String-Builder,
and various date classes.
Chapter 4, Methods and Encapsulation,
explains how to write methods,
including access
modifiers.
It also shows how to call lambdas.
Chapter 5,
Class Design, adds interface and superclasses.
I also include casting and polymorphism.
Chapter 6,
Execeptions, shows the different types of exceptions
classes and how to use them.
Methods & Encapsulations
