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
}
}
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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);
}
}
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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";
}
}
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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);
}
}
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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);
}
}
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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);
}
}
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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);
}
}
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3-6) Run. What is the outcome?
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