Introduction To Java Programming Language

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initiated the Java language project

James Gosling, Mike Sheridan, and Patrick Naughton i

On what year does the Java language project initiate?

1991

The small team of Sun Microsystems engineers called Green Team.

True

Firstly, it was called "_________" by James Gosling, and the file extension was .gt.

Greentalk

After that, it was called “Java” and was developed as a part of the Green project.

Oak

Why Java named "Oak"?

In 1995, Oak was renamed as "Java" because it was already a trademark by Oak Technologies.

Oak is a symbol of strength and chosen as a national tree of many countries like ______,_________,______.

USA, France,Germany,Romania

Why had they chosen java name for Java language? The team gathered to choose a new name. The suggested words were:

“dynamic", "revolutionary", "Silk", "jolt", "DNA", etc.

According to James Gosling

Java was one of the top choices along with Silk". Since Java was so unique, most of the team members preferred Java than other names.

Java is an island of __________ where the first coffee was produced (called java coffee). It is a kind of espresso bean. Java name was chosen by James Gosling while having coffee near his office.

Indonesia

Java was Initially developed by ___________ at Sun Microsystems (which is now a subsidiary of Oracle Corporation) and released in 1995.

James Gosling,

Java was Initially developed by James Gosling at Sun Microsystems (which is now a subsidiary of Oracle Corporation) and released in ______.

1995

in 1995, Time magazine did not called Java one of the Ten Best Products of 1995.

False

This date on which (JDK) 1.0 was released?

January 23, 1996

After the first release of Java, there have been many additional features added to the language.

True

After the first release of Java, there have been many additional features added to the language.

True

Java is not being used in Windows applications, Web applications, enterprise applications, mobile applications, cards, etc. Each new version does not add new features in Java.

False, Now Java is being used in Windows applications, Web applications, enterprise applications, mobile applications, cards, etc. Each new version adds the new features in Java.

The need for platform independent language that could be embedded in various consumer electronic products like toasters and refrigerators.

True

One of the first projects developed using Java is

personal hand-held remote control named Star 7.

At about the same time, the World Wide Web and the Internet were gaining popularity. Gosling et. al. realized that Java could be used for

internet programming

As a programming language, Java cannot create all kinds of applications that you could create using any conventional programming language.

False, As a programming language, Java can create all kinds of applications that you could create using any conventional programming language.

As a development environment, Java technology provides you with a large suite of tools, among them are:

A compiler(javac) An interpreter (java) A documentation generator(javadoc) A class file packaging tool

are typically general-purpose programs that run on any machine where the Java Runtime Environment (JRE) is installed

Java technology applications

There are two main deployment environments:

- JRE supplied by the Java 2 Software Development Kit (SDK) - on your web browser

contains the complete set of class files for all the Java technology packages, which includes basic language classes, Graphical User Interface (GUI) component classes, and so on.

Software Development Kit (SDK)

The other main deployment environment is on your web browser. Most commercial browsers supply a Java technology

interpreter and runtime environment.

is an imaginary machine that is implemented by emulating software on a real machine; provides the hardware platform specifications to which you compile all Java technology code.

Java Virtual Machine (JVM)

is a special machine language that can be understood by the Java Virtual Machine (JVM).

Bytecode

Responsible for freeing any memory that is no longer in use by the application.This happens automatically during the lifetime of the Java program.

Garbage Collection

is attained in Java through the implementation of its Java Runtime Environment (JRE).

Code security

runs code compiled for a JVM and performs class loading (through the class loader), code verification (through the bytecode verifier) and finally code execution.

Java Runtime Environment (JRE)

is responsible for all classes needed for the Java program.

Class Loader

the format of the code fragments and checks the code fragments for illegal code that can violate access rights to objects.

Bytecode verifier tests

(2) types of Java Program: are used to provide interactive features to web applications and can be executed by browsers for many platforms. They are small, portable Java programs embedded in HTML pages and can run automatically when the pages are viewed

Java applets/Applets program

(2) types of Java Program: -Java programs that can be developed and executed on a local computer. (Executed from the command prompt). -can be executed without the browsers (Internet connectivity).

Application program (Stand-alone application)

is not embedded within HTML or any other language and can stand on its own.

Application program

The smallest individual unit of a program written in any programming language; are the smallest individual building block or smallest unit of a Java program; the Java compiler uses it for constructing expressions and statements.

Java Token

Java's tokens are divided into five:

True

are pre-defined or reserved words in a programming language. Each keyword is meant to perform a specific function in a program. Since keywords are referred names for a compiler, they can't be used as variable names because by doing so, we are trying to assign a new meaning to the keyword which is not allowed.

Reserved Words / Keywords

in Java are a few characters which have special meaning known to Java compiler and cannot be used for any other purpose.

Special Symbols

in Java are similar to normal variables but their values cannot be changed once assigned. In other words, are constant variables with fixed values. These are defined by users and can belong to any data type.

Literals

Java supports five types of literals which are as follows:

Integer (int) Floating Point (float, double) Character (char) String (String) Boolean (boolean)

are used to name a variable, constant, method or function, class, and array.

Identifiers

Java provides many types of operators which can be used according to the need. They are classified based on the functionality they provide.

Operators

Operators Java provides many types of operators which can be used according to the need. They are classified based on the functionality they provide. Some of the operators are the following: • Arithmetic operators • Logical operators • Relational operators

True

are the statements in a program that are not executed by the compiler and interpreter.

Java Comments

Types of Java Comments: comment is used to comment only one line of the code. It is the widely used and easiest way of commenting the statements.

Single-line comment

Single line comments starts with

two forward slashes (//). Any text in front of // is not executed by Java.

is used to comment multiple lines of code. It can be used to explain a complex code snippet or to comment multiple lines of code at a time (as it will be difficult to use single-line comments there).

Multi-line comment

Multi-line comments are placed between

/* and */. Any text between /* and */ is not executed by Java.

are usually used to write large programs for a project or software application as it helps to create documentation API. These APIs are needed for reference, i.e., which classes, methods, arguments, etc., are used in the code.

Documentation comment

To create documentation comments, we need to use the javadoc tool. The documentation comments are placed between

/** and */.

the small team of sun microsystems engineers called

Green team

is a sequence of statements intended to accomplish a task.

Program

is a process of planning and creating a program.

Programming

is a set of rules, symbols, and special words used to construct programs.

Programming language

is a set of values with a set of operations on those values.

Data type

is a collection of related classes.

Package

is used to create java programs, either application or applet; It is the basic unit of a java program; It is a collection of methods and data members

Class

is a set of instructions to accomplish a specific task; It is the functional element of an object. Some of the predefined or standard methods are nextInt(), nextDouble() and print().

Method

consists of letters, digits, the underscore character(_) and the dollar sign ($) and must begin with letter,underscore or a dollar sign. Must not be a keyword or a reserved word.

java identifier

Naming conventions used in Java programming language are

PascalCase and camelCase

are used in naming Classes

PascalCase

are used in naming variables.

CamelCase

Hungarian notations are suitable for Java application programs.

False, Are Not suitable

a type of error which is considered as a programmer’s error; it is also called as a compile-time error. Another type of error is a Run-time error which is also known as a logical error; errors that will not display until you run or execute your program.

Sytax error

is a software application that helps programmers develop software code efficiently. It increases developer productivity by combining capabilities such as software editing, building, testing, and packaging in an easy-to-use application.

integrated development environment (IDE)

The following are Java programming language integral data types expect:

Float

A variable in java programming can start with the ff exept:

Number

It is the original name of Java programming language

Greentalk

The following are also options to be the name of the java programming language except:

Cool

The following are Iava programming language except:

Class

The following are phrases of Java program except:

Copy the program

Code security is attained in Jaca through the implementation of its JRE

True

A program is a sequence of statements intended to accomplish a task

True

The syntax error is also known as compile-time error

True

IDE is a software application that helps programmers develop software code efficiently

True

Java technology applications are typically general-purpose programs that run on any machine where the JRE is installed.

True

Java applets are small, portable Java programs embedded in HTML pages and can run automatically when the pages are viewed.

True

Any Kava application programs should always contain Main(String[] args) method.

False

Data Structure (history)

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Data Structure (history)

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Linear Data Structure

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Linear Data Structure

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Searching for Algorithms

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Searching for Algorithms

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Linked list/ Trees and graphs

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Linked list/ Trees and graphs

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Sorting algorithms

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Sorting algorithms

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INTRO TO MS ACCESS(database)

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INTRO TO MS ACCESS(database)

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Mod 2: Comp Prog

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Mod 2: Comp Prog

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COMP PROG MIDTERM

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COMP PROG MIDTERM

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FUNDAMENTALS OF DATABASE (Lesson 1)

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FUNDAMENTALS OF DATABASE (Lesson 1)

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FUNDAMENTALS OF DATABASE (part2)

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FUNDAMENTALS OF DATABASE (part2)

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DATABASE 2-5 MOD

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DATABASE 2-5 MOD

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DEPTALS (COMP PROG)

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DEPTALS (COMP PROG)

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HCI HISTORY

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HCI HISTORY

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Module 1 (System Analysis)

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Module 1 (System Analysis)

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Module 1 (Data Analytics)

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Module 1 (Data Analytics)

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Module 2(Data Analytics)

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Module 2(Data Analytics)

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Module 1 (Networking)

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Module 1 (Networking)

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Module 1 (Info Assurance)

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Module 1 (Info Assurance)

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mod 1 IT LIVING

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mod 1 IT LIVING

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問題一覧

initiated the Java language project

James Gosling, Mike Sheridan, and Patrick Naughton i

On what year does the Java language project initiate?

1991

The small team of Sun Microsystems engineers called Green Team.

True

Firstly, it was called "_________" by James Gosling, and the file extension was .gt.

Greentalk

After that, it was called “Java” and was developed as a part of the Green project.

Oak

Why Java named "Oak"?

In 1995, Oak was renamed as "Java" because it was already a trademark by Oak Technologies.

Oak is a symbol of strength and chosen as a national tree of many countries like ______,_________,______.

USA, France,Germany,Romania

Why had they chosen java name for Java language? The team gathered to choose a new name. The suggested words were:

“dynamic", "revolutionary", "Silk", "jolt", "DNA", etc.

According to James Gosling

Java was one of the top choices along with Silk". Since Java was so unique, most of the team members preferred Java than other names.

Java is an island of __________ where the first coffee was produced (called java coffee). It is a kind of espresso bean. Java name was chosen by James Gosling while having coffee near his office.

Indonesia

Java was Initially developed by ___________ at Sun Microsystems (which is now a subsidiary of Oracle Corporation) and released in 1995.

James Gosling,

Java was Initially developed by James Gosling at Sun Microsystems (which is now a subsidiary of Oracle Corporation) and released in ______.

1995

in 1995, Time magazine did not called Java one of the Ten Best Products of 1995.

False

This date on which (JDK) 1.0 was released?

January 23, 1996

After the first release of Java, there have been many additional features added to the language.

True

After the first release of Java, there have been many additional features added to the language.

True

Java is not being used in Windows applications, Web applications, enterprise applications, mobile applications, cards, etc. Each new version does not add new features in Java.

False, Now Java is being used in Windows applications, Web applications, enterprise applications, mobile applications, cards, etc. Each new version adds the new features in Java.

The need for platform independent language that could be embedded in various consumer electronic products like toasters and refrigerators.

True

One of the first projects developed using Java is

personal hand-held remote control named Star 7.

At about the same time, the World Wide Web and the Internet were gaining popularity. Gosling et. al. realized that Java could be used for

internet programming

As a programming language, Java cannot create all kinds of applications that you could create using any conventional programming language.

False, As a programming language, Java can create all kinds of applications that you could create using any conventional programming language.

As a development environment, Java technology provides you with a large suite of tools, among them are:

A compiler(javac) An interpreter (java) A documentation generator(javadoc) A class file packaging tool

are typically general-purpose programs that run on any machine where the Java Runtime Environment (JRE) is installed

Java technology applications

There are two main deployment environments:

- JRE supplied by the Java 2 Software Development Kit (SDK) - on your web browser

contains the complete set of class files for all the Java technology packages, which includes basic language classes, Graphical User Interface (GUI) component classes, and so on.

Software Development Kit (SDK)

The other main deployment environment is on your web browser. Most commercial browsers supply a Java technology

interpreter and runtime environment.

is an imaginary machine that is implemented by emulating software on a real machine; provides the hardware platform specifications to which you compile all Java technology code.

Java Virtual Machine (JVM)

is a special machine language that can be understood by the Java Virtual Machine (JVM).

Bytecode

Responsible for freeing any memory that is no longer in use by the application.This happens automatically during the lifetime of the Java program.

Garbage Collection

is attained in Java through the implementation of its Java Runtime Environment (JRE).

Code security

runs code compiled for a JVM and performs class loading (through the class loader), code verification (through the bytecode verifier) and finally code execution.

Java Runtime Environment (JRE)

is responsible for all classes needed for the Java program.

Class Loader

the format of the code fragments and checks the code fragments for illegal code that can violate access rights to objects.

Bytecode verifier tests

Java applets/Applets program

(2) types of Java Program: -Java programs that can be developed and executed on a local computer. (Executed from the command prompt). -can be executed without the browsers (Internet connectivity).

Application program (Stand-alone application)

is not embedded within HTML or any other language and can stand on its own.

Application program

Java Token

Java's tokens are divided into five:

True

Reserved Words / Keywords

in Java are a few characters which have special meaning known to Java compiler and cannot be used for any other purpose.

Special Symbols

Literals

Java supports five types of literals which are as follows:

Integer (int) Floating Point (float, double) Character (char) String (String) Boolean (boolean)

are used to name a variable, constant, method or function, class, and array.

Identifiers

Java provides many types of operators which can be used according to the need. They are classified based on the functionality they provide.

Operators

True

are the statements in a program that are not executed by the compiler and interpreter.

Java Comments

Types of Java Comments: comment is used to comment only one line of the code. It is the widely used and easiest way of commenting the statements.

Single-line comment

Single line comments starts with

two forward slashes (//). Any text in front of // is not executed by Java.

is used to comment multiple lines of code. It can be used to explain a complex code snippet or to comment multiple lines of code at a time (as it will be difficult to use single-line comments there).

Multi-line comment

Multi-line comments are placed between

/* and */. Any text between /* and */ is not executed by Java.

Documentation comment

To create documentation comments, we need to use the javadoc tool. The documentation comments are placed between

/** and */.

the small team of sun microsystems engineers called

Green team

is a sequence of statements intended to accomplish a task.

Program

is a process of planning and creating a program.

Programming

is a set of rules, symbols, and special words used to construct programs.

Programming language

is a set of values with a set of operations on those values.

Data type

is a collection of related classes.

Package

is used to create java programs, either application or applet; It is the basic unit of a java program; It is a collection of methods and data members

Class

is a set of instructions to accomplish a specific task; It is the functional element of an object. Some of the predefined or standard methods are nextInt(), nextDouble() and print().

Method

consists of letters, digits, the underscore character(_) and the dollar sign ($) and must begin with letter,underscore or a dollar sign. Must not be a keyword or a reserved word.

java identifier

Naming conventions used in Java programming language are

PascalCase and camelCase

are used in naming Classes

PascalCase

are used in naming variables.

CamelCase

Hungarian notations are suitable for Java application programs.

False, Are Not suitable

Sytax error

integrated development environment (IDE)

The following are Java programming language integral data types expect:

Float

A variable in java programming can start with the ff exept:

Number

It is the original name of Java programming language

Greentalk

The following are also options to be the name of the java programming language except:

Cool

The following are Iava programming language except:

Class

The following are phrases of Java program except:

Copy the program

Code security is attained in Jaca through the implementation of its JRE

True

A program is a sequence of statements intended to accomplish a task

True

The syntax error is also known as compile-time error

True

IDE is a software application that helps programmers develop software code efficiently

True

Java technology applications are typically general-purpose programs that run on any machine where the JRE is installed.

True

Java applets are small, portable Java programs embedded in HTML pages and can run automatically when the pages are viewed.

True

Any Kava application programs should always contain Main(String[] args) method.

False