Definition
Variables are identifiers associated with values. They are declared by writing the variable's type and name, and are optionally initialized in the same statement by assigning a value. Instance variables are declared inside a class but outside a method. They can been seen by all methods in the class.Instance Variable Example Program
public class InstanceVariableDemo{
public String str1;
private String str2;
public InstanceVariableDemo (String empName){
str1 = empName;
}
public void salary(String empSal){
str2 = empSal;
}
public void disp(){
System.out.println( str1 );
System.out.println( str2 );
}
public static void main(String args[]){
InstanceVariableDemo obj = new InstanceVariableDemo("This is an instance variable and is visible to all child classes");
obj.salary("The variable str2 is visible only inside methodOne");
obj.disp();
}
}
Sample Output
Output is:
This is an instance variable and is visible to all child classes
The variable str2 is visible only inside methodOne
