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fix typo
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@ -235,7 +235,7 @@ JDK1.4中新加入的 **NIO(New Input/Output) 类**,引入了一种基于**通
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**验证:**
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```java
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String s1 = new String("abc");// 堆内存的地值值
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String s1 = new String("abc");// 堆内存的地址值
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String s2 = "abc";
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System.out.println(s1 == s2);// 输出false,因为一个是堆内存,一个是常量池的内存,故两者是不同的。
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System.out.println(s1.equals(s2));// 输出true
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