Intelij idea efficient skills (II)

1. Introduce

idea Is the tool we use most , So the purpose of this article is to lead you to use idea.

idea There is a special awesome function in ：live template( Template function ), You can create a piece of code as a template , Then define a shorter name for the template , Then enter the name of the template in the code tab perhaps enter key , Template code snippets can be instantaneously introduced into the current code , Greatly improved the development efficiency . Here are some common template methods .

2. frequently-used live tempalte

2.1 main Method

psvm+Enter key ： Output main Method

public static void main(String[] args) {
    
}

2.2 Output if block

boolean Variable .if+Enter key ： Output if block

for example : flag.if+Enter key

boolean flag = true;
if (flag) {
    
}

2.3 Output is not if block

boolean Variable .else+Enter key ： Output is not if block

for example : flag.else+Enter key

boolean flag = true;
if (!flag) {
    
}

2.4 Output for loop

fori+Enter key ： Output for loop

for (int i = 0; i < ; i++) {
    
}

list Variable .fori+Enter key ： Output for loop

List<String> list = Arrays.asList("1","2","3");
for (int i = 0; i < list.size(); i++) {
    

}

2.5 Output for Reverse cycle

list Variable .forr+Enter key ： Output for Reverse cycle

List<String> list = Arrays.asList("1","2","3");
for (int i = list.size() - 1; i >= 0; i--) {
    

}

2.6 Output foreach loop

list Variable .for+Enter key ： Output foreach loop

list.for+Enter  key 

Output results :

List<String> list = Arrays.asList("1","2","3");
for (String s : list) {
    

}

2.7 Output while loop

boolean Variable .while+Enter key , Output while loop

for example : flag.while+Enter key , Output

boolean flag = true;
while (flag) {
    
}

2.8 Quickly create an object

object .var+Enter key ： Quickly create an object

such as ：“ Passerby ”.var+Enter key , Output

String s = " Passerby ";

new String().var+Enter key , Output

String s = new String();

2.9 Quickly return a value in a method

Variable .return+Enter key ： Quickly return a value in a method

public String getName(){
    
    " Passerby ".return+Enter key 
}

Output results :

public String getName(){
    
    return " Passerby ";
}

2.10 Quick output console print statements

sout+Enter key ： Fast output

System.out.println();

Print out variables quickly , “ Passerby ”.sout+Enter key , Output

System.out.println(" Passerby ");

2.11 Fast output try…catch block

Code tail .try+Enter key ： Fast output try…catch block

int i = 10;.try+Enter key 

Output results :

try {
    
    int i = 10;
} catch (Exception e) {
    
    e.printStackTrace();
}

2.12 Define static variables

Class prsf+Enter key , Output private static variables

private static final

Class psf+Enter key , Output public static variables

public static final

Class psfi+Enter key , Output int Public static variables of type

public static final int

Class psfs+Enter key , Output String Public static variables of type

public static final String

2.13 Quickly throw an exception

Method thr+Enter key , Output

throw new

3. Customize live template

idea Some commonly used , But sometimes we also want to customize some of our common templates , So how to operate ？

Open Settings File->Settings->Live template , Add a group . Click... As shown below "+", choice "Template Group", The group name is tcf Well , You can name it as you like
stay tcf Add a template under the group tcf, The operation is as follows :
Set up tcf Template information , What I'm adding here is try-catch-finally Code block ;

• Abbreviation（ Indent name ）： That is, after the code input pssd Press the shortcut key to generate private static String var
• Edit variables（ Edit and write ）： Edit variables , Including the order , Variable function, etc , See notes below for details
• Description（ notes ）： Note template function
• Template text（ Template body ）：x x As a variable ,END Is a self-contained variable , That is, where the last cursor stays
• Applicable（ Range of application ）： Indicate what file and under what circumstances . Generally, it is checked by default java Can
• options（ Shortcut key ）： The input pssd Then press Enter still Tab Generate template . Authors generally use Tab key , On the one hand, it is to prevent conflicts with the built-in template , On the other hand, with shell Shortcut keys one to
• Reformate According to Style： Automatic code formatting . If you do not check the code, it will not be indented and wrapped automatically

When entering... In the code "tcf+Enter key ", The following code appears instantly , Is it really cool .

try {
    

} catch (Exception e) {
    

} finally {
    

}

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