Figure 6-9: Eclipse marks occurrences of the in Java

Create Quick Response Code in Java Figure 6-9: Eclipse marks occurrences of the

By default, Eclipse highlights occurrences in yellow But you can change the color by visiting the Workbench Editors Annotations page of the Window Preferences dialog (Just select the Occurrences item in that page s Annotation Presentation list)

Eclipse gives you a few ways to turn the mark occurrences mechanism on and off For my money, none of these ways is very convenient (But money has nothing to do with it After all, Eclipse is free) Press Alt+Shift+O to toggle between marking and not marking occurrences Press the Mark Occurrences button on Eclipse s toolbar to toggle between marking and not marking occurrences The button s icon is the picture of a yellow highlight marker (See Figure 6-10) When the Mark Occurrences feature is on, press Alt+Shift+U to temporarily remove the highlighting The highlighting goes away until you click another name (When you move to another name, Eclipse marks all occurrences of the new name)

You can pick the kinds of names whose occurrences you want marked Visit the Java Editor Mark Occurrences page of the Window Preferences dialog

Put your cursor on the return type in a method s header Eclipse marks all exit points in the method s body (See Figure 6-11) Put your cursor on the name of a Java exception Eclipse marks any method calls that throw the exception* (See Figure 6-12)

If your code doesn t compile because it contains errors, Eclipse s mark occurrences mechanism may not work

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y wife and kids say that I never finish sentences Hey, Sam, I say What he asks I found something that ll really interest you I found and then several seconds go by You found what he says What did you find Finish the @!&(% sentence! It s a simple process In the middle of a sentence, my mind wanders and I become interested in something else Suddenly, the external world fades to the background and my internal thoughts dance before my eyes It s not my fault It s an inherited trait My mother used to do the same thing If I m lucky, generations of For Dummies readers will analyze this aspect of my psyche What made Burd s works so unique was the fact that he wrote several books while suffering from disosyllabicmonohypotopia In Eclipse For Dummies, Burd admits that he paused more often than he spoke Before you make fun of me, picture yourself sitting in front of a computer You start typing a line of Java code, say framesetBackground(Color What color names are available you ask yourself Can I use ColorDARKGRAY or do I need ColorDARK_GRAY And is it GRAY or GREY I never could spell that word My third grade teacher Hey, what was the name of that kid who used to bully me And so on Your mind wanders If Eclipse could talk, it may say Color dot what Forget about third grade and finish typing the @!&(% statement! But instead, Eclipse opens a hover tip containing all the static members of the Color class How thoughtful of Eclipse to do such a thing!

Imagine staring at someone, and waiting for him to tell you what to say I see my friend George Then George looks back at me and says Your choices are Hello, George, or How are things, George or You owe me ten bucks, George So I say, You owe me ten bucks, and before I finish, he says George That s what code assist is like You may have used code assist with other programming languages and with other development environments The idea is, you type some incomplete Java code, and then Eclipse tells you all the ways you can complete it