JDK
Download jdk installation and configure environment variables Run java -version to see if the installation and configuration are successful
Eclipse
Download eclipse and unzip it directly to the directory
eclipse configure jre
set compile level
Eclipse-Tomcat configuration
Configure tomcat ( download tomcat in advance and decompress it), click add, select the tomcat directory, and configure the jre environment.
Add tomcat server, File - "new - "other-" server, the Apache Tomcat v7.0 selected here is the tomcat just configured
After adding it, select Windows->Show View->Other to display the Server window, and then double-click the tomcat configuration parameter just added.
Configure the startup parameters, and add the java memory setting command in the red box to prevent memory overflow:
-Xms128m -Xmx512m -XX:PermSize=128m -XX:MaxPermSize=512m
Eclipse other common settings
eclipse default character set
eclipse add code prompt
.changed to .abcdefghijklmnopqrstuvwxyz
eclipse memory settings
In order to prevent memory overflow when eclipse starts running, modify the eclipse.ini file and add the following:
-Xms128m
-Xmx768m
-XX：permSize=64M
-XX：MaxPermSize=128M