Update memory-area.md

Snailclimb · Snailclimb · commit e9f23e6d08d2 · 2021-12-16T21:57:18.000+08:00
diff --git a/docs/java/jvm/memory-area.md b/docs/java/jvm/memory-area.md
@@ -318,7 +318,7 @@ System.out.println(str4 == str5);//false
 > ```java
 > String aa = "ab"; // 放在常量池中
 > String bb = "ab"; // 从常量池中查找
-> System.out.println("aa==bb");// true
+> System.out.println(aa==bb);// true
 > ```
 >
 > JDK1.7 之前运行时常量池逻辑包含字符串常量池存放在方法区。JDK1.7 的时候，字符串常量池被从方法区拿到了堆中。

Original file line number	Diff line number	Diff line change
`@@ -318,7 +318,7 @@ System.out.println(str4 == str5);//false`
`318`	`318`	> ```java
`319`	`319`	`> String aa = "ab"; // 放在常量池中`
`320`	`320`	`> String bb = "ab"; // 从常量池中查找`
`321`		`-> System.out.println("aa==bb");// true`
	`321`	`+> System.out.println(aa==bb);// true`
`322`	`322`	> ```
`323`	`323`	`>`
`324`	`324`	`> JDK1.7 之前运行时常量池逻辑包含字符串常量池存放在方法区。JDK1.7 的时候，字符串常量池被从方法区拿到了堆中。`