NETBEANS Java Basics 105 – String and Character

PREREQUISITE

Download NetBeans from https://netbeans.org/downloads/

STEPS

1) Open the Startup Project.

Refer previous tutorial, http://javadevsteps.blogspot.com/2014/08/netbeans-java-basics-101-getting-started.html .

package firstproject;

public class FirstProject {

public static void main(String[] args) {

// TODO code application logic here

}

2) EDIT THE CODES.

2-1) Add:

a) String variable declaration statement.

b) String variable assignment statement.

c) Output statement.

package firstproject;

public class FirstProject {

public static void main(String[] args) {

String first_name;

first_name = "William";

System.out.println(first_name);

}

2-2) Run.

2-3) Add:

a) A Character variable declaration and init statement, and

b) A String variable declaration and init statement.

package firstproject;

public class FirstProject {

public static void main(String[] args) {

String first_name;

first_name = "William";

System.out.println(first_name);

char wordSeparator=',';

String family_name = "H";

}

2-4) Edit:

Include the new variables into the Output Statement.

package firstproject;

public class FirstProject {

public static void main(String[] args) {

String first_name;

first_name = "William";

System.out.println(first_name);

char wordSeparator=',';

String family_name = "H";

System.out.println(first_name+wordSeparator+family_name);

}

2-5) Run.

3) STRING/CHARACTER VALUE CONVERSION AND OUTPUT

3-1) Add the following variable declaration statements and output statement.

package firstproject;

public class FirstProject {

public static void main(String[] args) {

String first_name;

first_name = "William";

System.out.println(first_name);

char wordSeparator=',';

String family_name = "H";

System.out.println(first_name+wordSeparator+family_name);

char char_letter=first_name.charAt(0);

String string_letter=Character.toString(char_letter);

System.out.println(char_letter);

System.out.println(string_letter);

}

3-2) Run.

3-3) Add the following output statement at the end of the above codes.

package firstproject;

public class FirstProject {

public static void main(String[] args) {

String first_name;

first_name = "William";

System.out.println(first_name);

char wordSeparator=',';

String family_name = "H";

System.out.println(first_name+wordSeparator+family_name);

char char_letter=first_name.charAt(0);

String string_letter=Character.toString(char_letter);

System.out.println(char_letter);

System.out.println(string_letter);

System.out.println(char_letter+wordSeparator+string_letter);

}

3-4) Run. What is the outcome?

3-5) Add another output statement at the end of the above codes.

package firstproject;

public class FirstProject {

public static void main(String[] args) {

String first_name;

first_name = "William";

System.out.println(first_name);

char wordSeparator=',';

String family_name = "H";

System.out.println(first_name+wordSeparator+family_name);

char char_letter=first_name.charAt(0);

String string_letter=Character.toString(char_letter);

System.out.println(char_letter);

System.out.println(string_letter);

System.out.println(char_letter+wordSeparator+string_letter);

System.out.println(""+char_letter+wordSeparator+string_letter);

}

3-6) Run. What is the outcome?

REFERENCE

http://www.homeandlearn.co.uk/java/string_variables.html

http://www.functionx.com/java/Lesson02.htm