Implementation of line breaks and automatic line breaks when formatting code in eclipse

1. preferences-> JAVA-> code style-> code formatter-> show ..., after opening, select the "line wrapping" tab and wrap the line when "maximun line width" specifies the number of columns to be greater.
2. on the "line wrapping" tab, you can select "line wrapping policy" to specify line breaks for constructors and method bodies.
However, sun's recommended encoding style defaults to 80-column line breaks.

1. JavaCode
Open the window menu of eclipse, and then preferences-> JAVA-> code style-> formatter-> edit/show (the available buttons vary according to different versions) -> line wrapping-> maximum line width: You can change the line width from 80 to 800.
2. HTML code
Window-> preferences-> myeclipse-> files and editors-> HTML source-> line width-> Add 0 and save the settings.