Inline
IntelliJ IDEA provides the following inline refactorings:
Inline Variable
refactoring replaces redundant variable usage with its initializer.
See
example .
This refactoring is opposite to the
Extract Variable refactoring.
The variable must be initialized at declaration. If the initial value is modified
somewhere in the code, only the occurrences before modification will be inlined.
Inline Method
refactoring results in placing method's body into the body of its caller(s). You can opt to:
inline all occurrences of the method, and delete the method inline only a single occurrence, and retain the method
See example .
This refactoring is opposite to the
Extract Method refactoring.
Inline to Anonymous Class
refactoring allows replacing redundant class with its contents.
Inline Constructor
allows compressing a chain of constructors, if one of them
is a special case of another. Seeexample .
Inline JSP/JSPX
works like a regular Java inline refactoring.
Inline Superclass
refactoring results in pushing superclass' methods into the class where they are used, and
removing the superclass.
Examples Inline Variable Before After
public void method () {
int number = anotherClass . intValue ();
int b = a + number ;
}
public void method () {
int b = a + anotherClass . intValue ();
}
public void method () {
AnotherClass . InnerClass aClass = anotherClass . innerClass ;
int a = aClass . i ;
}
public void method () {
int a = anotherClass . innerClass . i ;
}
Inline Method Before After
public void method () {
int c = add ( a , b );
int d = add ( a , c );
}
private int add ( int a , int b ) {
return a + b ;
}
public void method () {
int c = a + b ;
int d = a + c ;
}
public ArrayList method () {
String [] strings = { "a" , "b" , "c" };
ArrayList list = add ( strings );
return list ;
}
private ArrayList add ( String [] strings ) {
ArrayList list = new ArrayList ();
for ( int i = 0 ; i < strings . length ; i ++)
{ list . add ( strings [ i ]);}
return list ;
}
public ArrayList method () {
String [] strings = { "a" , "ab" , "abc" };
ArrayList list1 = new ArrayList ();
for ( int i = 0 ; i < strings . length ; i ++)
{ list . add ( strings [ i ]);}
ArrayList list = list1 ;
return list ;
}
Inline Constructor Before After
public class Class {
public int varInt ;
public Class () {
this ( 0 );
}
public Class ( int i ) {
varInt = i ;
}
public void method () {
Class aClass = new Class ();
...
}
}
public class Class {
public int varInt ;
public Class ( int i ) {
varInt = i ;
}
public void method () {
Class aClass = new Class ( 0 );
...
}
}
Inline Superclass Before After
public class Bar {
...
int calculations1 () { ... }
int calculations2 () { ... }
}
class Foo extends Bar {
int someMethod () {
...
if ( something > calculations1 ()) {
...
return calculations2 ();
}
...
}
}
class Foo {
...
int someMethod () {
...
if ( something > calculations1 ()) {
...
return calculations2 ();
}
...
}
int calculations1 () {...}
int calculations2 () {...}
}
To perform the inline refactoring Place the caret in the editor at the desired symbol to be inlined. Do one of the following:
On the main menu or on the context menu, choose
. Press Ctrl+Alt+N .
In the Inline dialog
, that corresponds to the selected symbol,
specify the inlining options.
Preview and apply changes .
Last modified: 23 November 2016