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String tokenization-
import java.util.StringTokenizer; import java.util.Scanner;
public class Tokenization { public static void main(String args[]) { Scanner sc=new Scanner(System.in); String tt; tt=sc.nextLine();
StringTokenizer st = new StringTokenizer(tt); while (st.hasMoreTokens()) { System.out.println(st.nextToken()); }
} }
import java.util.StringTokenizer; import java.util.Scanner;
public class Tokenization { public static void main(String args[]) { Scanner sc=new Scanner(System.in); String tt; tt=sc.nextLine();
StringTokenizer st = new StringTokenizer(tt,"/");
while (st.hasMoreTokens()) { System.out.println(st.nextToken()); }
} }
import java.util.StringTokenizer; public class Tokenization2 { public static void main(String[] args) {
StringTokenizer st = new StringTokenizer("how/are/you","/",true);
// checking next token System.out.println("Next token is : " + st.nextToken()); System.out.println("Next token is : " + st.nextToken()); System.out.println("Next token is : " + st.nextToken()); } }
import java.util.StringTokenizer; public class Tokenization { public static void main(String[] args) { StringTokenizer st = new StringTokenizer("how are you"," "); System.out.println("Total tokens : " + st.countTokens()); } }
Hierarchical-
class Animal { void eat(){System.out.println("eating...");} }
class Dog2 extends Animal { void bark(){System.out.println("barking...");} }
class Cat extends Animal { void meow(){System.out.println("meowing...");} }
class Hierarchical { public static void main(String args[]){ Cat c=new Cat(); c.meow(); c.eat(); //c.bark(); }}
Mutilevel-
class Animal { void eat(){System.out.println("eating...");} } class Dog1 extends Animal { void bark(){System.out.println("barking...");} } class Puppy extends Dog { void weep(){System.out.println("weeping...");} }
class multiLevel { public static void main(String args[]) { Puppy d=new Puppy(); d.weep(); d.bark(); d.eat(); } }
Use of Super in constructor-
class Superclass1 { int age;
Superclass1() { this.age = 10; }
}
class Sub_class1 extends Superclass { String name; Sub_class1(int age, String name) { super(); this.name = name; }
void display() { System.out.println("The age of " + name + " is:" +age); }
public static void main(String argd[]) { Sub_class1 s = new Sub_class1(24,"Amit"); s.display(); } }
Aggregation-
class Operation { int square(int n) { return n*n; } }
class Circle{ Operation op;//aggregation double pi=3.14;
double area(int radius) { op=new Operation(); int rsquare=op.square(radius);//code reusability (i.e. delegates the method call). return pi*rsquare; }
}
public class Aggregation { public static void main(String args[]){ Circle c=new Circle(); double result=c.area(5); System.out.println(result); } }
class Address { String city,state;
Address(String city, String state) { this.city = city; this.state = state; }
}
class Dept {
