急急急！！！Java语言程序设计
JAVA\u8bed\u8a00\u7a0b\u5e8f\u8bbe\u8ba1public class calculator {
public static void main(String []args){
float x=2.5f;
double y=4;
int a=7;
char c;
long b;
System.out.println(""+(x+a%3*(int)y));
}
}
\u4e0d\u540c\u7c7b\u578b\u5728\u4e00\u8d77\u65f6\uff0c\u6700\u540e\u7ed3\u679c\u81ea\u52a8\u8f6c\u6362\u6700\u7cbe\u786e\u7684\u800c\u5728java\u4e2d\u8fd9\u51e0\u4e2a\u7c7b\u578b\u91ccdouble\u662f\u6700\u7cbe\u786e\u7684\u6240\u4ee5double
\u7b2c\u4e8c\u4e2a\u5f88\u7b80\u53556\uff0e5\uff0818.5000\u628a\u6211\u5413\u7740\u4e86\uff08\uff0d\uff0d\uff09\uff01\uff01\u90a3\u4f4d\u5144\u5f1f\u53ef\u80fd\u770b\u7684\u592a\u5feb\u4e86\uff09
\u4e00\u5206\u949f\u8bfb\u61c2Java\u8bed\u8a00\u7a0b\u5e8f\u8bbe\u8ba1
class ShuiXianHua{
public static void main(String args[]){
int a,b,c,n;
for(n=100;n<=999;n++){
a=n%10;
b=n/10%10;
c=n/100%10;
if(n==Math.pow(a,3)+Math.pow(b,3)+Math.pow(c,3))
System.out.print(n+" ");
}
}
}
运行结果：
153 370 371 407
绛旓細Sun鏄Java鎴愪负涓涓畝 鍗(Simple)銆侀潰鍚戝璞＄殑(Object Oriented)銆 鍒嗗竷寮忕殑(Distributed)銆佽В閲婄殑(Interpreted)銆佸仴澹殑(Robust)銆佸畨鍏ㄧ殑(Secure)銆 缁撴瀯涓珛鐨(Architecture Neutral)銆佸彲绉绘鐨(Portable)銆侀珮鏁堣兘鐨(High Performance)銆佸绾跨▼鐨(Multithreaded)銆佸姩鎬佺殑(Dynamic)鐨绋嬪簭璇█(鎽樿瘧鑷 TheJava Language:...
绛旓細//寮曞叆out鏂规硶绠鍖栧悗闈㈢殑缂栫▼ import static java.lang.System.out;public class Oushu { public static void main(String[] args) { // TODO Auto-generated method stub int k=0;for(int i=1;i<=100;i++){ if(i%2==0){ k++;//鈥淺t鈥濆氨鏄┖鍑轰竴涓猅AB閿殑瀹藉害 out.print("\t"+...
绛旓細javac锛氳礋璐ｇ殑鏄紪璇戠殑閮ㄥ垎锛屽綋鎵цjavac鏃讹紝浼氬惎鍔java鐨缂栬瘧鍣绋嬪簭銆傚鎸囧畾鎵╁睍鍚嶇殑.java鏂囦欢杩涜缂栬瘧銆 鐢熸垚浜唈vm鍙互璇嗗埆鐨勫瓧鑺傜爜鏂囦欢銆備篃灏辨槸class鏂囦欢锛屼篃灏辨槸java鐨勮繍琛岀▼搴忋俲ava锛氳礋璐ｈ繍琛岀殑閮ㄥ垎.浼氬惎鍔╦vm.鍔犺浇杩愯鏃舵墍闇鐨勭被搴,骞跺class鏂囦欢杩涜鎵ц銆備竴涓枃浠惰琚墽琛,蹇呴』瑕佹湁涓涓墽琛岀殑...
绛旓細棣栧厛寰楃煡閬揓ava鏄粈涔堬紝Java鏄疭UN(Stanford University Network锛屾柉鍧︾澶у缃戠粶鍏徃)1995骞存帹鍑虹殑涓闂ㄩ珮绾х紪绋嬭瑷锛屾槸涓绉嶉潰鍚慖nternet鐨勭紪绋嬭瑷銆傞殢鐫Java鎶鏈湪web鏂归潰鐨勪笉鏂垚鐔燂紝宸茬粡鎴愪负Web搴旂敤绋嬪簭鐨勯閫夊紑鍙戣瑷銆傞偅涔堜负浠涔堣浣跨敤杩欎釜璇█鍛紝Java璇█鐨勭壒鐐硅法骞冲彴鎬э紝閫氳繃Java璇█缂栧啓鐨勫簲鐢ㄧ▼搴忓湪涓嶅悓...
绛旓細琛ュ叏鐨凷huiXianHua绋嬪簭锛屼綘鐪嬬湅鍚с俢lass ShuiXianHua{ public static void main(String args[]){ int a,b,c,n;for(n=100;n<=999;n++){ a=n%10;b=n/10%10;c=n/100%10;if(n==Math.pow(a,3)+Math.pow(b,3)+Math.pow(c,3))System.out.print(n+" ");} } } 杩愯缁撴灉锛1...
绛旓細5. 瀵圭▼搴忕殑缁存姢:缁存姢鐩稿綋浜庡敭鍚庢湇鍔,杩欎釜闈炲父閲嶈銆傚洜涓虹▼搴忓湪杩愯惀鏃,鍙兘閬囧埌鍚勭鍚勬牱鐨勭獊鍙戜簨浠,闈㈠杩欎簺绐佸彂鎯呭喌,蹇呴』瑕佽繘琛岀揣鎬ョ殑澶勭悊銆傜淮鎶ゅ寘鎷洓涓柟闈"鏀规鎬х淮鎶ゃ侀傚簲鎬х淮鎶ゃ佸畬鍠勬х淮鎶ゃ侀闃叉х淮鎶"銆 Java,鏄敱Sun Microsystems鍏徃浜1995骞5鏈堟帹鍑虹殑Java绋嬪簭璁捐璇█鍜孞ava骞冲彴鐨勬荤О銆傜敤Java瀹炵幇鐨凥otJav...
绛旓細绗竴姝ワ細鍏堟墦寮鈥滄暟鎹.xls鈥濃濓紝鍐嶆洿鏂伴摼鎺ワ紝鍐嶆墽琛屸滄墽琛屸濆畯锛屽啀鍏抽棴鈥滄暟鎹.xls鈥濃濈浜屾锛氬厛鎵撳紑鈥滃垎琛.xls鈥濃濓紝鍐嶆洿鏂伴摼鎺ワ紝鍐嶆墽琛屸滄墽琛屸濆畯锛屽啀鍏抽棴鈥滃垎琛.xls鈥濃濈涓夋锛氬厛鎵撳紑鈥滄昏〃.xls鈥濃濓紝鍐嶆洿鏂伴摼鎺ワ紝鍐嶆墽琛屸滄墽琛屸濆畯锛屽啀鍏抽棴鈥滄昏〃xls鈥濃
绛旓細鍏堜粠鏈绠鍗曠殑java璇硶瀛︼紝涓嶅繀璇淬傜劧鍚庡氨鍐檞eb绋嬪簭鍚э紝浠巗ervlet锛宖ilter锛宩sp鍐欍傜劧鍚庡紑濮嬫鏋讹紝springmvc 锛宻pring锛宧ibernate锛宮ybatis锛屽皾璇曡嚜宸辨惌妗嗘灦鍐欑偣搴旂敤锛堣繖绉嶄功寰堝锛夊熀纭浜嗚В鍚庯紝鐪嬬湅springside锛屽緢鏈夊悕姘旓紝鐜板湪鐗堟湰鏄4锛堟垜涓汉涓鐩磋涓虹増鏈1鐨勬枃妗ｆ槸鏈绮捐嚧鐨勶紝鏂逛究娣卞叆浜嗚В妗嗘灦鑳屽悗锛夛紝璺熻嚜宸...
绛旓細鎺ュ彛锛欶actorialImp 鎶借薄绫伙細FactorialAbs 瀹炵幇璁＄畻闃朵箻n!鐨勭被锛欶atorial 浠ｇ爜锛/** * * 闃朵箻璁＄畻鍣 * * 鎺ュ彛 */public interface FactorialImp {// 璁＄畻闃朵箻n!鐨勫糽ong factorial(int n);}/** * * 闃朵箻璁＄畻鍣 * * 鎶借薄绫 缁ф壙 FactorialImp */public abstract class FactorialAbs ...
绛旓細涓嬮潰鏄竴涓java 灏忕▼搴瀹炵幇鐨刬mport java.awt.*;//寮曞叆鍖卛mport java.applet.Applet;//寮曞叆鍖卲ublic class Output extends Applet//瀹氫箟绫粄 //瀹氫箟鍙橀噺 private String name; private int num; //鍒濆鍖 public void init() { name = getParameter("vname"); num = Integer.parseInt(getParameter("vnum"))...
