The length of each line when Eclipse is custom formatted

When using eclipse for formatting, do you feel like you don't need to change the line when you do it? The following figure lets you customize the length of the change when formatting.

First step: Select the Preferences Property under window

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The second step: Select Java--code style--formatter, click New, name, click OK

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Step three: Select Line rapping, set the length

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The length of each line when Eclipse is custom formatted