what is enum in java
public class MyClass {
enum Level {
LOW,
MEDIUM,
HIGH
}
public static void main(String[] args) {
Level myVar = Level.MEDIUM;
System.out.println(myVar);
}
}
what is enum in javapublic enum AlertLevel {
Undefined(0),
Ok(1),
Warning(2),
Alarm(3);
}// A simple enum example where enum is declared
// outside any class (Note enum keyword instead of
// class keyword)
enum Color
{
RED, GREEN, BLUE;
}
public class Test
{
// Driver method
public static void main(String[] args)
{
Color c1 = Color.RED;
System.out.println(c1);
}
}
// Java program to demonstrate that enums can have constructor
// and concrete methods.
// An enum (Note enum keyword inplace of class keyword)
enum Color
{
RED, GREEN, BLUE;
// enum constructor called separately for each
// constant
private Color()
{
System.out.println("Constructor called for : " +
this.toString());
}
public void colorInfo()
{
System.out.println("Universal Color");
}
}
public class Test
{
// Driver method
public static void main(String[] args)
{
Color c1 = Color.RED;
System.out.println(c1);
c1.colorInfo();
}
}
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