Experimenting in a computer science course is difficult owing to limitations in space, equipment, and unique experiment tools. In this paper, we design two types of virtual lab platforms and develop corresponding virtual lab systems for computer science curricula courses based on an analysis of the experimental features of computer science curricula such as the Principle of Computer Organization, Digital Image Process, Digital Signal Process, and so on. Every experiment instrument in the real lab is displayed as a Java component in the first virtual lab. The algorithm students learn in the course is packaged as a Web Service component in C, C++, or Java in the other type of virtual lab. Such components are listed in the system in both platforms. Students can choose Java components or Web Service components based on the needs of the experiment and combine them by connecting them. The students can then enter input for the experiment into the input component. The result will be presented for the students on the platform when they click the rum button. Students can also develop code on the platform in the two types of virtual laboratories. Upon submission, the platform will transfer those programmes as a component and add them to the component list. After that, users may utilise them as platform components. As a result, students can verify whether the algorithm they create is right. The Java Virtual Lab is an interactive online environment designed to provide a hands-on learning experience for Java programming language. It allows students to practice and experiment with Java programming concepts and techniques without the need for a physical lab setup. The virtual lab provides a range of features including a code editor, compiler, debugger, and a virtual machine to run Java programs. It also offers a variety of programming challenges and exercises to test the knowledge and skills of the students. The Java Virtual Lab is a valuable tool for students learning Java programming as it allows them to explore, experiment and learn in a safe, controlled and interactive environment.

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