Java Semaphore with explaination
The argument to the Semaphore instance is the number of "permits" that are available. It can be any integer, not just 0 or 1.\nFor runb all acquire() calls will
The argument to the Semaphore instance is the number of "permits" that are available. It can be any integer, not just 0 or 1.\nFor `runb` all acquire() calls will block and tryAcquire() calls will return false, until you do a release().\nFor `runf` the first acquire() calls will succeed and the rest will block until the first one releases.\n\n\n```\nimport java.util.concurrent.*;\nclass FooBar {\n    private int n;\n    Semaphore runf, runb;\n    \n    public FooBar(int n) {\n        this.n = n;\n        runf = new Semaphore(1);\n        runb = new Semaphore(0);\n    }\n\n    public void foo(Runnable printFoo) throws InterruptedException {\n        \n        for (int i = 0; i < n; i++) {\n        \trunf.acquire();\n            printFoo.run();\n            runb.release();\n        }\n    }\n\n    public void bar(Runnable printBar) throws InterruptedException {\n        \n        for (int i = 0; i < n; i++) {\n            runb.acquire();\n        \tprintBar.run();\n            runf.release();\n        }\n    }\n}\n```
['Java']