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Create memory-area.md

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Sheldon7777 2021-11-29 15:57:48 +08:00 committed by GitHub
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docs/java/jvm/memory-area.md
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@ -363,7 +363,7 @@ String str4 = new StringBuilder().append(str1).append(str2).toString();
final String str1 = "str"; final String str1 = "str";
final String str2 = "ing"; final String str2 = "ing";
// 下面两个表达式其实是等价的 // 下面两个表达式其实是等价的
String c = "str" + "str2";// 常量池中的对象 String c = "str" + "ing";// 常量池中的对象
String d = str1 + str2; // 常量池中的对象 String d = str1 + str2; // 常量池中的对象
System.out.println(c == d);// true System.out.println(c == d);// true
``` ```
@ -377,7 +377,7 @@ System.out.println(c == d);// true
```java ```java
final String str1 = "str"; final String str1 = "str";
final String str2 = getStr(); final String str2 = getStr();
String c = "str" + "str2";// 常量池中的对象 String c = "str" + "ing";// 常量池中的对象
String d = str1 + str2; // 在堆上创建的新的对象 String d = str1 + str2; // 在堆上创建的新的对象
System.out.println(c == d);// false System.out.println(c == d);// false
public static String getStr() { public static String getStr() {