private String [][] personalDetails() {
logger.debug( "personalDetails()" );
String personArray [][] =
{
{ "John", " Muray", "1-10-1982" },
{ "Peter", " Kamau", "2-5-1987" },
{ "Mary", " Wambui", "8-5-1988" },
{ "Bethu", " Kips", "8-8-1987" },
{ "Cetera", " Omosh", "2-5-1987" }
};
return personArray;
}
/**
* Demonstrates initializing and populating a multi-dimensional array
* in one statement
*/
private void personalDetailsContent( ) {
logger.debug( "personalDetailsContent()" );
String [][] personArray= new String[ 5 ][5];
for(int i=0; i<=personArray.length; i++){
for(int j=0; j<=personArray[i].length; j++){
personArray[i][j]=i;
}
System.out.println( "Names " + i + "" + j +" : " + personArray[ i ][j] );
}
betny 0 Newbie Poster
NormR1 563 Posting Sage Team Colleague
Do you have a question?
betny 0 Newbie Poster
Please create a multi dimensional array that stores the following
information for 5 people:
* First Name
* Last Name
* Date of Birth
Your application should have one method that populates the multi
dimensional array with data and another method that shows the contents
of the multi dimensional array.
Have gone this far:
private String [][] personalDetails() {
logger.debug( "personalDetails()" );
String personArray [][] =
{
{ "John", " Muray", "1-10-1982" },
{ "Peter", " Kamau", "2-5-1987" },
{ "Mary", " Wambui", "8-5-1988" },
{ "Bethu", " Kips", "8-8-1987" },
{ "Cetera", " Omosh", "2-5-1987" }
};
return personArray;
}
/**
* Demonstrates Showing the content a multi-dimensional array
* in a different method from populating method.
*/
private void personalDetailsContent( ) {
logger.debug( "personalDetailsContent()" );
String [][] personArray= new String[ 5 ][5];
for(int i=0; i<=personArray.length; i++){
for(int j=0; j<=personArray[i].length; j++){
System.out.println( "Person index " + j +" : " + personArray[i][j] );
}
}
}
Errror:
Error: Exception in thread 'main' java.lang.IndexOutOfBoundException: 5
JamesCherrill 4,733 Most Valuable Poster Team Colleague Featured Poster
Arrays are 0 based,, so a [5] array has length 5 and indexes 0-4
Your loop
for(int i=0; i<=personArray.length; i++){
will attempt to access indexes 0-5, and will fail on the last one with an IndexOutOfBounds (5)
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