static keyword in java
// example on static class in java.
import java.util.*;
public class OuterClass
{
// static class
static class NestedClass
{
public void show()
{
System.out.println("in static class");
}
}
public static void main(String args[])
{
OuterClass.NestedClass obj = new OuterClass.NestedClass();
obj.show();
}
}static data and static methods in java
class JavaExample{
private static String str = "BeginnersBook";
//Static class
static class MyNestedClass{
//non-static method
public void disp() {
/* If you make the str variable of outer class
* non-static then you will get compilation error
* because: a nested static class cannot access non-
* static members of the outer class.
*/
System.out.println(str);
}
}
public static void main(String args[])
{
/* To create instance of nested class we didn't need the outer
* class instance but for a regular nested class you would need
* to create an instance of outer class first
*/
JavaExample.MyNestedClass obj = new JavaExample.MyNestedClass();
obj.disp();
}
}Copyright © 2021 Codeinu
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