Java cannot open smart prompt solution

The first step: select "window"->"preference"

The second step: select "java", And expand

Step 3: Select "Editor" and expand

##Step 4: Select "Content Assist", and on the right side, find "Auto Activation". There are 3 options below. Modify the second option. The default is ., which means that you will be automatically prompted when you type . in the code. , just add 26 letters (a-z, the order does not matter), so that no matter which letter you type, you will be prompted automatically. After adding, click "Apply"

Step 5: After modification, re-type the code, no matter which letter it is, it will automatically prompt

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