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Bridging mode is to separate things from their concrete implementation so that they can change independently. The purpose of bridging is: Decoupling abstraction and implementation, So that the two can be changed independently, Like our commonly used JDBC bridge DriverManager, when JDBC connects databases, it switches between databases without moving too much code or even at all. The reason is that JDBC provides a unified interface, each database provides its own implementation, and a program called database driver is used to bridge. Let's look at the diagram:Impeachment of the queen, asking the emperor to scrap the passbook like snowflakes, flew to the cabinet, the emperor...7岁的伯蒂尔的父母在工作，伯蒂尔独自在家，感到无聊。自从他妹妹玛莎因病去世以来，他是家里唯一的孩子。但当他…就在谢逊快要到目的地的时候，突然遇到了风暴，他们乘坐的船被毁，然后他们三人海上漂泊，最后到了一个荒岛。当今天下，可以说是楚汉越三足鼎立的局面，至于燕国，辽东，衡山这些小诸侯，完全都不不看在眼中。