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@@ -39,8 +39,7 @@ public class ForEachMap {
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for (String key : keySet) {
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System.out.println(key);
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}
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/*
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/*
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* 遍历每一组键值对(推荐)
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* map中每一组键值对都是由map的内部类:
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* java.util.map.entry的一个实例类表示的
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@@ -56,8 +55,7 @@ public class ForEachMap {
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Integer value = e.getValue();
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System.out.println(key + ":" + value);
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}
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/*
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/*
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* 遍历所有的value
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* Collection values()
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* 该方法会将当前map中所有的value存入一个集合后返回
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@@ -66,8 +64,6 @@ public class ForEachMap {
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for (Integer value : values) {
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System.out.println(value);
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}
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/*
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* jdk1.8
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*/
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