Object> useableMaps = Maps.newHashMap(); Map<String,Object> useableMaps1 = Maps.newHashMap(); Map<String,Object> useableMaps2 = Maps.newHashMap
和new ArrayList<>()一个样,都能推导尖括号里的数据类型 import: 1 importcom.google.common.collect.Lists; 依赖 <dependency> <groupId>com.google.guava</groupId> <artifactId>guava</artifactId> <version>28.1-jre</version> </dependency> 搬运一下源码吧,虽然我也不会看: 1 2 3 4 5 6 7 8 9...