Memory Leaks in Java

One of the beauties of using Java programming language is that the programmers need not worry about the memory allocation and freeing of objects. We simply declare and initialize objects and JVM (Java Virtual Machine) will take care of freeing them when they are no longer in use by any application through a mechanism called 'garbage collection'. Before we start our topic, let us check how the memory is allocated for the objects. Generally, the objects which are created using the 'new' keyword are allocated in 'memory heap' and the objects that are used for the method arguments and method variables are created into a 'stack'. When these objects are no more referred or when they are out of scope, they are eligible for garbage collection. The statement System.gc(); only suggest...

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Java Programming For Games

Do you often play games on your mobile phones? Maybe you often ask, what programs and applications used to create these games? There are many types of programs that can be used to build a computer application, such as gaming, security system for a basic level, database systems, and much more. Some languages programming that can be used to create a fairly simple game such as "Java Language" program. This type of program as well as easy to apply, is also quite easy to be developed into some other applications, such as Java C+ and C++. Use for gaming applications typically do not depend on the particular type of operating system, this is because the existing database on the program consists of several simple source code, so this kind of programming language can be used by them that...

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Java Application Programming - Components and Various Development Tools

Java is a very popular programming language which involves various syn-taxes from C++ and C language. But it has a simpler model then these two other complex programming languages. It has object model and low-level facilities for the users which makes it easier and simpler to use and understand. Java Application Programming was developed by a person named James Gosling in 1995, at a present date subsidiary of Oracle Corporations, which was then called as sun Micro-systems. JVM or Java Virtual Machines are needed to run these java applications which are compiled to class file format. Irrespective of the computer architecture JVM is always required to run this type of files. Java Application Programming is specifically designed to have the least amount of implementation bottlenecks. It works...

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Syntax Error dan Run Time Error

Kita kan sudah pernah membuat sebuah program java (minimal yang sederhana) bukan ? Kadang dalam proses kompilasi sebuah program maupun pada saat menjalankannya kita akan menemukan kesalahan / pesan error. Error ini dibagi menjadi 2 macam : Compile-Time Error atau yang disebut dengan Syntax Error. Ini biasanya terjadi karena :  kesalahan penulisan , misalnya lupa memberikan tanda titik koma pada akhir pernyataan, Java akan menunjukkan baris/kode yang terdapat kesalahan tersebut namun kadang petunjuk inipun bisa salah. Dalam kapitalisasi, ejaan, atau penggunaan karakter yang tidak benar. TIPS Jika kita mendapati banyak pesan error, koreksi satu persatu mulai dari kesalahan pertama, kompile ulang, dan lihat hasilnya, dengan demikian kita akan mengurangi jumlah kesalahan / error yang...

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Langkah - Langkah Membuat Program Java

Langkah langkah membuat program Java : Menuliskan program dengan teks editor. Contoh tekx editor yang dapat digunakan antara lain Notepad, vi, emacs, dan sebagainya Menyimpan hasil program dengan ekstensi .java.  Kompilasi program tersebut dengan menggunakan Java Compiler. Hasil kompilasinya berupa berkas bytecode dengan ekstensi .class. berkas ini kemudian akan dikonversikan oleh Java Interpreter menjadi bahasa mesin sesuai dengan jenis dan platform yang digunakan. Ok sekarang kita coba untuk menuliskan program sederhana dengan bahasa. Kita bisa menggunakan editor yang tersedia , misalnya Textpad, Notepad dan sebagainya. Pada Latihan ini...

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