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@ -363,7 +363,7 @@ String str4 = new StringBuilder().append(str1).append(str2).toString();
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final String str1 = "str";
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final String str2 = "ing";
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// 下面两个表达式其实是等价的
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String c = "str" + "str2";// 常量池中的对象
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String c = "str" + "ing";// 常量池中的对象
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String d = str1 + str2; // 常量池中的对象
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System.out.println(c == d);// true
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```
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@ -377,7 +377,7 @@ System.out.println(c == d);// true
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```java
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final String str1 = "str";
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final String str2 = getStr();
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String c = "str" + "str2";// 常量池中的对象
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String c = "str" + "ing";// 常量池中的对象
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String d = str1 + str2; // 在堆上创建的新的对象
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System.out.println(c == d);// false
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public static String getStr() {
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