急需请教几个简单的JAVA小程序!

//这是JAVA中的多肽 import java.util.*; class icon { public static void main(String []args) { System.out.print("请输入一个符号："); Scanner sc = new Scanner(System.in); String s = sc.next(); System.out.print("请输入一个整数："); int n = sc.nextInt(); Tx t = new Tx(); t.setS(s); t.setN(n); t.out(); Sj ss = new Sj(); ss.setS(s); ss.setN(n); ss.out(); Sj sl = new Sj(); sl.setS(s); sl.setN(n)

用java 写一个小程序

String str= new String("I am tomato"); byte[] b = new byte[str.length()]; for(int i=0; i

用java编一个小程序

import java.io.*;public class BaiduJava{ public static int[] input(String arg) { int n=Integer.parseInt(arg); int i=0; int a[]=new int[n]; while(i

求一个简单的Java小程序

package test.swing;import javax.swing.*;import java.awt.Event;public class TestJMenu {    public TestJMenu(){        JFrame jf=new JFrame("交换");        JMenuBar jmb=new JMenuBar();        String[] menu={"File","Edit","Help"};        String[][] mi={{"新建","打开","保存","","退出"},{"复制","剪切"},{"关于记事本"}};                for(int i=0;i

用java编一个小程序

import java.io.*;public class BaiduJava{ public static int[] input(String arg) { int n=Integer.parseInt(arg); int i=0; int a[]=new int[n]; while(i

求一个java的小程序，谢谢！

public class JY { public static void main(String args[]) { // 定义行数 int n = 5; int[][] t = new int[n][n]; int count = 1; for (int i = 0; i < n; i++) { if (i % 2 == 0) { for (int m = 0; m <= i; m++) { t[i][m] = count; count++; } for (int k = i - 1; k >= 0; k--) { t[k][i] = count; count++; } } else { for (int m = 0; m <= i; m++) { t[m][i] = count; count++