Java exercises

Exer 1 

//programmer: junnaliza Arreglado 
//programme name: hello object program 
// date started: march 17, 2009 
// date ended: march 17, 2009 
//purpose: manipulate String.. 

import javax.swing.*;

public class wordReverse {
  public static void main(String[] args) {

  String input; // Used for the input string.
  String reversed; // Reversed form or the input string.

  input = JOptionPane.showInputDialog(null, "Enter a string"); // get the string from the user
  reversed = "";
  for (int i=0; i  reversed = input.substring(i, i+1) + reversed;
  }
  JOptionPane.showMessageDialog(null, "Reversed:\n" + reversed); //the output of the reveresed string from the user
  }
}

sample output: 

enter a String:

Go to the main menu

unem niam eht ot oG


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exer4


//programmer: junnaliza Arreglado 
//programme name: hello object program 
// date started: march 17, 2009 
// date ended: march 17, 2009 
//purpose: manipulate String. 

import java.util.*;  
import java.io.*;  

public class nameEcho {  
 public static void main(String[] args) throws IOException  
 {  
 String yourName; 
 String firstName; 
 String lastname; 
 System.out.println("Enter your name:");  
 Scanner input = new Scanner(System.in);  
yourName = input.nextLine();  
firstName = yourName.substring(0,yourName.indexOf(" "));  
lastname= yourName.substring(yourName.indexOf(" "),yourName.length()).toUpperCase();  
 System.out.println();  
 System.out.print(firstName); 
 System.out.print(lastname); 
  System.out.println();  
 }  

} 


sample output: 

Enter your name: 
junnaliza arreglado 

junnaliza ARREGLADO 

Process completed. 




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Exer 5 


//programmer: junnaliza Arreglado 
//programme name: hello object program 
// date started: march 17, 2009 
// date ended: march 17, 2009 
//purpose: manipulate inputs.. 

import java.util.Scanner; 
public class helloObject  
{ 
  public static void main(String[] args)  
  { 
  String greetings; // Used for the input string. 
  Scanner input=new Scanner(System.in); 
  System.out.println("Enter Greeting:"); 
  greetings=input.nextLine(); 
  System.out.println(); 
  System.out.println(greetings); 
  } 
} 


sample output:

Enter Greeting: 
hello mars! 

hello mars! 

Process completed