Solve the Problem of freezing eclipse code prompts

The solution found on csdn today is very useful and has remarkable results:

Solution:
1. Find the src.zip file under your JDK installation directory (this file is included with the default JDK );
2. Open Eclipse: Window Menu-> preference-> JAVA-> installed jres;
3. Select the JRE you are using in eclipse in the list, and then edit;
4. Select Rt. jar and click "Source attachment". In the displayed dialog box, select "external file". Then, associate the src.zip file under your JDK installation directory with rt. jar;