java 查找素數 什么是質數? (What is a Prime Number?) A prime number is a natural number greater than 1 that is only divided by 1 and itself. 質數是大于1的自然數,只能除以1及其本身。 java素數代碼?For example, 5 is a prime number because it can
java構造函數Constructor in java is used to create the instance of the class. Constructors are almost similar to methods except for two things – its name is the same as the class name and it has no return type. Sometimes constructors are also referred to
java 同步塊關鍵字Java synchronized keyword is used in multithreading to create a code block that can be executed by only one thread at a time. Java同步關鍵字用于多線程中,以創建一個代碼塊,該代碼塊一次只能由一個線程執行。 為什么需要同步?