Hi friend,
This is wrapper class code
import java.io.*;
public class WrapperClass {
public static void main(String[] args) throws IOException{
BufferedReader buff = new BufferedReader(new InputStreamReader(System.in));
System.out.println("Enter some number and char");
String str = buff.readLine();
char a[] = {'a','b','5','?','A',' '};
for(int i=0; i<a.length; i++){
if(Character.isDigit(a[i]))
System.out.println(a[i] + " is a digit.");
if(Character.isLetter(a[i]))
System.out.println(a[i] + " is a letter.");
if(Character.isWhitespace(a[i]))
System.out.println(a[i] + " is a White Space.");
if(Character.isLowerCase(a[i]))
System.out.println(a[i] + " is a lower case.");
if(Character.isLowerCase(a[i]))
System.out.println(a[i] + " is a upper case.");
}
}
}
----------------------------
OOPS concept with example,
public class OOPExample {
int cadence = 0;
int speed = 0;
int gear = 1;
void changeCadence(int newValue) {
cadence = newValue;
}
void changeGear(int newValue) {
gear = newValue;
}
void speedUp(int increment) {
speed = speed + increment;
}
void applyBrakes(int decrement) {
speed = speed - decrement;
}
void printStates() {
System.out.print("Display total information of Vahicle ");
System.out.println("cadence:"+cadence+" speed:"+speed+" gear:"+gear);
}
}
------------------------------------
public class OOPClass {
public static void main(String[] args) {
// Create two different OOPExample objects
OOPExample vahicle1 = new OOPExample();
OOPExample vahicle2 = new OOPExample();
vahicle1.changeCadence(80);
vahicle1.speedUp(40);
vahicle1.changeGear(3);
vahicle1.printStates();
vahicle2.changeCadence(80);
vahicle2.speedUp(40);
vahicle2.changeGear(3);
vahicle2.changeCadence(50);
vahicle2.speedUp(30);
vahicle2.changeGear(4);
vahicle2.printStates();
}
}
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Read for more information,
http://www.roseindia.net/java/wrapper-class/http://www.roseindia.net/java/beginners/oop-in-java.shtml