在 jdk13 中展开地图构造函数

Question

I am new to java.I am learning a course in which they use java 8.It has applet class.But I have java13. the project is about unfolding map constructor.I tried to do that in java 13 with awt. But iam unable find out how to use unfolding map constructor in java13.Like what kind of packages to import and under what class they present in java 13.

can we use unfolding map in jdk13 or do we have any other alternative to access maps? I don't know whether the question is reasonable.If you got the point please help me out.

Answer 1

嗨，如果您查看展开地图的文档步骤，您将看到它使用需要 Java 7 或 8 的处理，因此安装 Java 7 并转到 intellij 文件结构并选择 JRE1.7