Java Learning 1: java Learning

Java Learning 1: java Learning

Public class Beijing {public static void main (String arge []) {int age = 23; // defines the int type long c = 2323232; // define the long integer char beij = 'hangzhou'; System. out. print (beij); boolean beijing = false; // defines boolenSystem. out. println (beijing) ;}// Definition

　　

 

Public class Dingyi {public static void main (String args []) {short a = 0; int I = 11; long l = 22; double d = 555; float m = 1.9f; system. out. println (I/m * d/l);} // operation

　　

 

Public class Iftest {public static void main (String args []) {int I = 2; if (I> 1 & I <11) {System. out. println ("I is located at 1 and 11");} else {System. out. println ("I is not between 1 and 11") ;}}// if statement

　　

 

 

Public class Switchjava {public static void main (String args []) {char c = '1'; switch (c) {case 'B': System. out. println ('n'); break; case 'A': System. out. println ('B'); break; default: System. out. println ('D') ;}}// switch statement