package Redundence_Initialize; import java.util.logging.Logger; public class Redundence_Initialize { static final Logger log = Logger.getLogger("log"); public void bad() { String a = ""; // bad 冗余的初始化 a = getString(); log.info(a); } public static String getString(){ return "redundence_initialize"; } public void good() { String a = "123"; // good 冗余的初始化 log.info(a); } }