Java Print | Printf | Println

Example Application: prints

Simple Print

There is no line break.

System.out.print("Simple Print - Hello World\n");

Simple Println

It has line break.

System.out.println("Simple Println - Hello World");

Print with Integer

Format Specifier: %d

System.out.println("Print Number: " + 999);

Print with Long

Format Specifier: %d

System.out.println("Print Long: " + 10L);

Print with Char

Format Specifier: %c

char c = 'A';
System.out.println("Print Char: " + c);

Print with String (java.lang.String)

Format Specifier: %s

System.out.println("Print String: " + "String Value");

Print with model / Print custom class

Model Person

Person person = new Person();
person.setName("Name");
person.setAge(30);
System.out.println("Print Class Model: " + person.toString());

Print with StringFormat

Use format specifier to replace with variable.

String format = "Custom Format: [Number: %d] - [Text: %s] - [Person Name: %s, Person Age: %d]";
Object[] params = new Object[] { 999, "Simple text", person.getName(), person.getAge() };
System.out.println(String.format(format, params));

Print with Printf and StringFormat

Use format specifier to replace with variable.

String format = "Custom Format: [Number: %d] - [Text: %s] - [Person Name: %s, Person Age: %d]";
Object[] params = new Object[] { 999, "Simple text", person.getName(), person.getAge() };
System.out.printf(format, params);

See Java - Stringformat Specifiers

Print with Date (Timestamp)

Format Specifier: %t

Date date = new Date();
System.out.println("Date: "+ date);

Print with Date Format (BR-PT) dd/MM/yyyy - hh:MM:ss

SimpleDateFormat dateFormatBR = new SimpleDateFormat("dd/MM/yyyy - hh:MM:ss");
System.out.println("Date BR: "+ dateFormatBR.format(date));

Print with keyboard text

System.out.println("Insert Text Here: ");
Scanner in = new Scanner(System.in);
String text = in.nextLine();
	
System.out.println("Keyboard text: " + text);

fefong/java_print