What is safety and sandboxing in Java?

In Java, safety and sandboxing are important concepts that ensure secure execution of Java applications, particularly in web environments. Safety refers to the primary goal of the Java platform to prevent unauthorized access to system resources and data by using a robust security manager and access control mechanisms. Sandboxing, on the other hand, restricts the capabilities of untrusted Java code, allowing it to run in a controlled environment where it has limited access to the host system and its resources.

For instance, Java applets that run in a web browser are executed within a sandbox that prevents them from performing potentially harmful actions, such as reading or writing files to the local filesystem or making network requests to arbitrary hosts.

// Example of setting Java security policy System.setProperty("java.security.policy", "path/to/java.policy"); // Defining permissions in policy file grant { permission java.io.FilePermission "/path/to/file.txt", "read"; };

safety sandboxing Java security Java applets access control

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