求大佬，這個(gè)用Java怎么寫(xiě)出來(lái)

參考Java源代碼：

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import java.util.Scanner;

public class Test09 {

public static void main(String[] args) {

Scanner scan = new Scanner(System.in);

char start, end;

int delta;

int row, col;

int i, j;

do {

System.out.print("The first character: ");

start = scan.next().charAt(0);

System.out.print("The last character: ");

end = scan.next().charAt(0);

} while(start end);

delta = end - start + 1;

for(row=0; rowdelta; row++) {//控制圖案整體行數(shù)

//上三角形圖案

for(i=0; idelta; i++) {//控制一個(gè)圖案的一行

for(col=0; coldelta; col++) {//控制圖案整體列數(shù)

for(j=0; jdelta-1-i; j++) {//輸出前導(dǎo)空格

System.out.print(" ");

}

for(j=0; j2*i+1; j++) {//輸出字母

System.out.print((char)(start + i));

}

for(j=0; jdelta-1-i; j++) {//輸出后面空格

System.out.print(" ");

}

System.out.print("???? ");?? ?//輸出間隔

}

System.out.println();

}

//下三角形圖案

for(i=0; idelta-1; i++) {//控制一個(gè)圖案的一行

for(col=0; coldelta; col++) {//控制圖案整體列數(shù)

for(j=0; j=i; j++) {//輸出前導(dǎo)空格

System.out.print(" ");

}

for(j=0; j2*delta-3-2*i; j++) {//輸出字母

System.out.print((char)(start + delta - 2 - i));

}

for(j=0; j=i; j++) {//輸出后面空格

System.out.print(" ");

}

System.out.print("???? ");?? ?//輸出間隔

}

System.out.println();

}

System.out.println();

}

}

}

運(yùn)行測(cè)試：

大佬求幫助寫(xiě)這條Java代碼，急

package?test1;

import?java.util.Scanner;

public?class?Test?{

public?static?void?main(String[]?args){

Scanner?scanner?=?new?Scanner(System.in);

System.out.println("輸入數(shù)組1長(zhǎng)度");

int?n1?=?scanner.nextInt();

System.out.println("輸入數(shù)組1");

String?nullString1?=?scanner.nextLine();

String?numsString1?=?scanner.nextLine();

String[]?split1?=?numsString1.split("?");

System.out.println("輸入數(shù)組2長(zhǎng)度");

int?n2?=?scanner.nextInt();

System.out.println("輸入數(shù)組2");

String?nullString2?=?scanner.nextLine();

String?numsString2?=?scanner.nextLine();

String[]?split2?=?numsString2.split("?");

System.out.println("輸入條件");

String?numsString3?=?scanner.nextLine();

String[]?split3?=?numsString3.split("?");

int?start?=?Integer.valueOf(split3[0]);

int?mubiao?=?Integer.valueOf(split3[1]);

int?number?=?Integer.valueOf(split3[2]);

for(int?i?=?(mubiao-1),y=(start-1),c?=?0?;?c??number?;?i++,y++,c++){

split1[y]?=?split2[i];

}

for(int?i?=0?;?i??split1.length?;?i++){

System.out.print(split1[i]+"?");

}

}

}

java輸入輸出流與文件，求源代碼！感謝大佬！

你好，java的API中提供了用于對(duì)象輸入輸出文件的操作，實(shí)例代碼如下：

定義單詞類如下(注意：你定義的類要實(shí)現(xiàn)Serializable接口)

public class Words implements Serializable {

private int size;

private String[] words;

public Words(){};

public Words(String...strs){

this.words = strs;

this.size = strs.length;

}

@Override

public String toString() {

return "Words{" +

"size=" + size +

", words=" + Arrays.toString(words) +

'}';

}

}

2. 對(duì)象輸入輸出api測(cè)試類

public class ObjIOTest {

public static void main(String[] args) {

String path = "d:/myIOTest.txt";

ObjIOTest objIOTest = new ObjIOTest();

Words words = new Words("hello", "my", "dear", "friend");

try {

objIOTest.writeObject(path,words);

Words wordsFromFile = (Words)objIOTest.readObject(path);

System.out.println(wordsFromFile.toString());

} catch (IOException | ClassNotFoundException e) {

e.printStackTrace();

}

}

//java serialize a object to file

public void writeObject(String path,Object map) throws IOException{

File f=new File(path);

FileOutputStream out=new FileOutputStream(f);

ObjectOutputStream objwrite=new ObjectOutputStream(out);

objwrite.writeObject(map);

objwrite.flush();

objwrite.close();

}

// read the object from the file

public Object readObject(String path) throws IOException, ClassNotFoundException{

FileInputStream in=new FileInputStream(path);

ObjectInputStream objread=new ObjectInputStream(in);

Object map=objread.readObject();

objread.close();

return map;

}

}

把兩段代碼拷貝到一個(gè)包下即可運(yùn)行了，希望您的問(wèn)題得到解答

請(qǐng)問(wèn)哪位大佬能幫忙寫(xiě)一下java代碼，一個(gè)五行九列的程序，如圖

public?class?Pyramid

{

public?static?void?main(String[]?args)

{

int?i=0,j=0,n=6,k=0;

for(i=0;?in;?i++)

{

k=1;

for(j=0;?j(n+i);?j++)

{

if(jn-i-1)

System.out.print("?");

else

{

System.out.print(""+k);

if(j(n-1))

k++;

else

k--;

}

}

System.out.println("?");

}

}

}

求大佬幫助寫(xiě)這條Java代碼

public class Person {

public String name;

public int age;

public Person(String name, int age){

this.name = name;

this.age = age;

}

public Person(String name){

this.name = name;

this.age = 20;

}

public void work(){

System.out.println("我正在工作！");

}

public static void main(String[] args) {

Person p = new Person("I");

p.work();

}

}

-------------------------------------------------------------

public class Person {

public String name;

public int age;

public Person(String name, int age){

this(name);

this.age = age;

}

public Person(String name){

this.name = name;

this.age = 20;

}

public void work(){

System.out.println("我正在工作！");

}

public static void main(String[] args) {

Person p = new Person("I");

p.work();

}

}

class Student extends Person{

public Student(String name){

super(name);

}

public void work(){

System.out.println("學(xué)生在學(xué)習(xí)！");

}

}

class Teacher extends Person{

public Teacher(String name){

super(name);

}

public void work(){

System.out.println("老師在授課！");

}

}

當(dāng)前名稱：大佬寫(xiě)的java代碼 JAVA寫(xiě)代碼
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