Question

Write a Java program to do the following with your name. This can all be done in the main() method.

1. Create a String variable called myName and assign your personal name to it. Use proper capitalization for a legal name. I.e. String myName = "Billy Bob";

2. Load myName with the upper case version of itself and display the result.

3. Load myName with the lower case version of itself and display the result.

4. Capitalize the first letter of each given name in the lowercased name and display the result. Load the result into myName. Hint: This is not a single method call. You will need a loop to perform this. Hint: The substring method will be very helpful as you should likely build a new string result. Avoid magic number references. This solution should work with any proper name.

5. Using the value of the variable myName from Step 4:

1. Display the Initials of the name. ( This may require a Loop)
2. Use the trim methd on myName and store the results into myName.
3. Display the size of the name

Answer 1

public class Main
{
public static void main (String[]args)
{
String myName="Billy Bob";
myName=myName.toUpperCase();//toUpperCase converts into capital
System.out.println(myName);
myName=myName.toLowerCase();//converts lower case
System.out.println(myName);
int i;
int ch,ch1;
for(i=0;i<myName.length()-1;i++)//parse through String
{
ch=myName.charAt(i);//store present Character
if(i==0)//for first we have to make it capital
{
ch=ch-32;//-32 will convert into capital
myName=(char)ch+myName.substring(1); //append converted capital and remaining String
}
if(ch==' ')//if the Character is ' ' next one should be capital
{
ch1=myName.charAt(i+1)-32;//convert next Character into upper case
//append upto that Character and add converted upper case and remaining
myName=myName.substring(0,i+1)+(char)ch1+myName.substring(i+2);
  
}
}
System.out.println(myName);
//first Character is always capital print that first Character
System.out.print("The first letters of all names are:"+myName.charAt(0)+" ");
for(i=1;i<myName.length()-1;i++)//parse through remaining string
{
ch=myName.charAt(i);
if(ch==' ')//if the Character is ' ' then next Character is definetly capital
System.out.print(myName.charAt(i+1)+" ");//print next character
}
myName=myName.trim();
System.out.println("\nThe size of string "+myName+" is "+myName.length());
}
}

Different input