IDEA——JAVA的快捷语法

前言

IDEA中一些JAVA的快捷语法，这里记录下

内容

🥙 查看快捷语法

ctrl+alt+s->live->java

🍔 现有快捷语法

1. C(Surround with Callable)

java.util.concurrent.Callable<$RET$> callable = new java.util.concurrent.Callable<$RET$>() {
  public $RET$ call() throws Exception {
    $SELECTION$
    $END$ 
  }
};

2. fori(Create iteration loop)

for(int $INDEX$ = 0; $INDEX$ < $LIMIT$; $INDEX$++) {
  $END$
}

3. geti(Inserts singleton method getInstance)

public static $CLASS_NAME$ getInstance() {
  return $VALUE$;
}

4. l(Iterate Iterable or array)

for ($ELEMENT_TYPE$ $VAR$ : $SELECTION$) {
  $END$
}
 

5. ifn(Inserts 'if null' statement)

if ($VAR$ == null) {
$END$
}

6. inn(Inserts 'if not null' statement)

if ($VAR$ != null) {
$END$
}

7. inst(Checks object type with instanceof and down-casts it)

if ($EXPR$ instanceof $TYPE$) {
  $TYPE$ $VAR1$ = ($TYPE$)$EXPR$;
  $END$
}

8. itar(Iterate elements of array)

for(int $INDEX$ = 0; $INDEX$ < $ARRAY$.length; $INDEX$++) {
  $ELEMENT_TYPE$ $VAR$ = $ARRAY$[$INDEX$];
  $END$
}

9. itco(Iterate elements of java.util.Collection)

for($ITER_TYPE$ $ITER$ = $COLLECTION$.iterator(); $ITER$.hasNext(); ) {
  $ELEMENT_TYPE$ $VAR$ =$CAST$ $ITER$.next();
  $END$
}

10. iten(Iterate java.util.Enumeration)

while($ENUM$.hasMoreElements()){
  $TYPE$ $VAR$ = $CAST$ $ENUM$.nextElement();
  $END$
}

11. iter(Iterate Iterable or array)

for ($ELEMENT_TYPE$ $VAR$ : $ITERABLE_TYPE$) {
  $END$
}

12. itit(Iterate java.util.Iterator)

while($ITER$.hasNext()){
  $TYPE$ $VAR$ = $CAST$ $ITER$.next();
  $END$
}

13. itli(Iterate elements of java.util.List)

for (int $INDEX$ = 0; $INDEX$ < $LIST$.size(); $INDEX$++) {
  $ELEMENT_TYPE$ $VAR$ = $CAST$ $LIST$.get($INDEX$);
  $END$
}

14. ittok(Iterate tokens from String)

for (java.util.StringTokenizer $TOKENIZER$ = new java.util.StringTokenizer($STRING$); $TOKENIZER$.hasMoreTokens(); ) {
    String $VAR$ = $TOKENIZER_COPY$.nextToken();
    $END$
}
 

15. lazy(Performs lazy initialization)

if ($VAR$ == null) {
  $VAR$ = new $TYPE$($END$);
}

16. lst(Fetches last element of an array)

$ARRAY$[$ARRAY$.length - 1]

17. main(main() method declaration)

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

18. mn(Sets lesser value to a variable)

$VAR$ = Math.min($VAR$, $END$);

19. mx(Sets greater value to a variable)

$VAR$ = Math.max($VAR$, $END$);

20. prsf(private static final)

private static final

21. psf(public static final)

public static final

22. psfi(public static final int)

public static final int

23. psfs(public static final String )

public static final String 

24. psvm(main() method declaration)

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

25. ritar(Iterate elements of array in reverse order)

for(int $INDEX$ = $ARRAY$.length - 1; $INDEX$ >= 0; $INDEX$--) {
  $ELEMENT_TYPE$ $VAR$ = $ARRAY$[$INDEX$];
  $END$
}

26. RL(Surround with ReadWriteLock.readLock)

$LOCK$.readLock().lock();
try { 
  $SELECTION$
} finally {
  $LOCK$.readLock().unlock();
}
 

27. serr(Prints a string to System.err)

System.err.println($END$);

28. serrc(System.err::println)

System.err::println

29. souf(Prints a formatted string to System.out)

System.out.printf("$END$");

30. sout(Prints a string to System.out)

System.out.println($END$);

31. soutc(System.out::println)

System.out::println

32. soutm(Prints current class and method names to System.out)

System.out.println("$CLASS_NAME$.$METHOD_NAME$");

33. soutp(Prints method parameter names and values to System.out)

System.out.println($FORMAT$);

34. soutv(Prints a value to System.out)

System.out.println("$EXPR_COPY$ = " + $EXPR$);

35. St(String)

String

36. thr(throw new)

throw new

37. toar(Stores elements of java.util.Collection into array)

$COLLECTION$.toArray(new $COMPONENT_TYPE$[0])$END$

38. WL(Surround with ReadWriteLock.writeLock)

$LOCK$.writeLock().lock();
try { 
  $SELECTION$
} finally {
  $LOCK$.writeLock().unlock();
}