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Java常用高大上代码 简短的java代码
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给段最简单的java代码 让我新手看一下
最简单的java代码肯定就是这个了，如下：
public class MyFirstApp
{
public static void main(String[] args)
{
System.out.print("Hello world");
}
}
“hello world”就是应该是所有学java的新手看的第一个代码了。如果是零基础的新手朋友们可以来我们的java实验班试听，有免费的试听课程帮助学习java必备基础知识，有助教老师为零基础的人提供个人学习方案，学习完成后有考评团进行专业测试，帮助测评学员是否适合继续学习java，15天内免费帮助来报名体验实验班的新手快速入门java，更好的学习java！
相关问答
Q1: 用swing编写一个java抽奖的程序，至少有5个按钮，显得高大上一点。
#8205;
import java.awt.Color;//界面不是很高大上档次，但是能满足你的基本需求，希望对你有用
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.border.Border;
import javax.swing.border.LineBorder;
public class 抽奖游戏 extends JFrame {
static 抽奖游戏 frame;
public 抽奖游戏() {
setLayout(new GridLayout(3, 3, 3, 3));
Border border = new LineBorder(Color.BLUE, 4);
JButton l1 = new JButton();
JButton l2 = new JButton();
JButton l3 = new JButton();
JButton l4 = new JButton();
JButton l5 = new JButton();
JButton l6 = new JButton();
JButton l7 = new JButton("祝你好运");
JButton l8 = new JButton("中奖规则");
JButton l9 = new JButton("再次抽奖");
l1.setBorder(border);
l2.setBorder(border);
l3.setBorder(border);
l4.setBorder(border);
l5.setBorder(border);
l6.setBorder(border);
l7.setBorder(border);
l8.setBorder(border);
l9.setBorder(border);
String[] num2 = { "1", "2", "3", "4", "5", "6" };
l8.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
JOptionPane.showMessageDialog(null, "游戏规则:\n" + "特等奖:\n"
+ "第一行或者第二行出现的数字全部相同\n"
+ "第一第二行出现升序的1,2,3,4,5,6或者降序的6,5,4,3,2,1\n" + "一等奖\n"
+ "1:第一行或第二行的数字降序排列或者升序排列\n"
+ "2:第一行或者第二行相邻的按钮出现一样的数字\n");
}
});
l9.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
l1.setText("*");
l2.setText("*");
l3.setText("*");
l4.setText("*");
l5.setText("*");
l6.setText("*");
l7.setBackground(Color.lightGray);
l7.setText("离中奖不远了！");
}
});
l6.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
int j1 = (int) (Math.random() * 10) % 6;
l1.setText(num2[j1]);
int j2 = (int) (Math.random() * 10) % 6;
l2.setText(num2[j2]);
int j3 = (int) (Math.random() * 10) % 6;
l3.setText(num2[j3]);
int j4 = (int) (Math.random() * 10) % 6;
l4.setText(num2[j4]);
int j5 = (int) (Math.random() * 10) % 6;
l5.setText(num2[j5]);
int j6 = (int) (Math.random() * 10) % 6;
l6.setText(num2[j6]);
if (j1 == j2 j2 == j3 || j4 == j5 j5 == j6 || j1 == 1
j2 == 2 j3 == 3 j4 == 4 j5 == 5 j6 == 6
|| j1 == 6 j2 == 5 j3 == 4 j4 == 3 j5 == 2
j6 == 1) {
l7.setBackground(Color.red);
l7.setText("特等奖");
} else if (j1 j2 j2 j3 || j3 j2 j2 j1 || j4 j5
j5 j6 || j6 j5 j5 j4 || j1 == j2
j5 == j4 || j1 == j2 j5 == j6 || j3 == j2
j4 == j5 || j5 == j6 j2 == j3) {
l7.setBackground(Color.YELLOW);
l7.setText("一等奖");
} else {
l7.setBackground(Color.lightGray);
l7.setText("未中奖，加油！");
}
}
});
l5.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
int j1 = (int) (Math.random() * 10) % 6;
l1.setText(num2[j1]);
int j2 = (int) (Math.random() * 10) % 6;
l2.setText(num2[j2]);
int j3 = (int) (Math.random() * 10) % 6;
l3.setText(num2[j3]);
int j4 = (int) (Math.random() * 10) % 6;
l4.setText(num2[j4]);
int j5 = (int) (Math.random() * 10) % 6;
l5.setText(num2[j5]);
int j6 = (int) (Math.random() * 10) % 6;
l6.setText(num2[j6]);
if (j1 == j2 j2 == j3 || j4 == j5 j5 == j6 || j1 == 1
j2 == 2 j3 == 3 j4 == 4 j5 == 5 j6 == 6
|| j1 == 6 j2 == 5 j3 == 4 j4 == 3 j5 == 2
j6 == 1) {
l7.setBackground(Color.red);
l7.setText("特等奖");
} else if (j1 j2 j2 j3 || j3 j2 j2 j1 || j4 j5
j5 j6 || j6 j5 j5 j4 || j1 == j2
j5 == j4 || j1 == j2 j5 == j6 || j3 == j2
j4 == j5 || j5 == j6 j2 == j3) {
l7.setBackground(Color.YELLOW);
l7.setText("一等奖");
} else {
l7.setBackground(Color.lightGray);
l7.setText("未中奖，加油！");
}
}
});
l4.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
int j1 = (int) (Math.random() * 10) % 6;
l1.setText(num2[j1]);
int j2 = (int) (Math.random() * 10) % 6;
l2.setText(num2[j2]);
int j3 = (int) (Math.random() * 10) % 6;
l3.setText(num2[j3]);
int j4 = (int) (Math.random() * 10) % 6;
l4.setText(num2[j4]);
int j5 = (int) (Math.random() * 10) % 6;
l5.setText(num2[j5]);
int j6 = (int) (Math.random() * 10) % 6;
l6.setText(num2[j6]);
if (j1 == j2 j2 == j3 || j4 == j5 j5 == j6 || j1 == 1
j2 == 2 j3 == 3 j4 == 4 j5 == 5 j6 == 6
|| j1 == 6 j2 == 5 j3 == 4 j4 == 3 j5 == 2
j6 == 1) {
l7.setBackground(Color.red);
l7.setText("特等奖");
} else if (j1 j2 j2 j3 || j3 j2 j2 j1 || j4 j5
j5 j6 || j6 j5 j5 j4 || j1 == j2
j5 == j4 || j1 == j2 j5 == j6 || j3 == j2
j4 == j5 || j5 == j6 j2 == j3) {
l7.setBackground(Color.YELLOW);
l7.setText("一等奖");
} else {
l7.setBackground(Color.lightGray);
l7.setText("未中奖，加油！");
}
}
});
l3.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
int j1 = (int) (Math.random() * 10) % 6;
l1.setText(num2[j1]);
int j2 = (int) (Math.random() * 10) % 6;
l2.setText(num2[j2]);
int j3 = (int) (Math.random() * 10) % 6;
l3.setText(num2[j3]);
int j4 = (int) (Math.random() * 10) % 6;
l4.setText(num2[j4]);
int j5 = (int) (Math.random() * 10) % 6;
l5.setText(num2[j5]);
int j6 = (int) (Math.random() * 10) % 6;
l6.setText(num2[j6]);
if (j1 == j2 j2 == j3 || j4 == j5 j5 == j6 || j1 == 1
j2 == 2 j3 == 3 j4 == 4 j5 == 5 j6 == 6
|| j1 == 6 j2 == 5 j3 == 4 j4 == 3 j5 == 2
j6 == 1) {
l7.setBackground(Color.red);
l7.setText("特等奖");
} else if (j1 j2 j2 j3 || j3 j2 j2 j1 || j4 j5
j5 j6 || j6 j5 j5 j4 || j1 == j2
j5 == j4 || j1 == j2 j5 == j6 || j3 == j2
j4 == j5 || j5 == j6 j2 == j3) {
l7.setBackground(Color.YELLOW);
l7.setText("一等奖");
} else {
l7.setBackground(Color.lightGray);
l7.setText("未中奖，加油！");
}
}
});
l2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
int j1 = (int) (Math.random() * 10) % 6;
l1.setText(num2[j1]);
int j2 = (int) (Math.random() * 10) % 6;
l2.setText(num2[j2]);
int j3 = (int) (Math.random() * 10) % 6;
l3.setText(num2[j3]);
int j4 = (int) (Math.random() * 10) % 6;
l4.setText(num2[j4]);
int j5 = (int) (Math.random() * 10) % 6;
l5.setText(num2[j5]);
int j6 = (int) (Math.random() * 10) % 6;
l6.setText(num2[j6]);
if (j1 == j2 j2 == j3 || j4 == j5 j5 == j6 || j1 == 1
j2 == 2 j3 == 3 j4 == 4 j5 == 5 j6 == 6
|| j1 == 6 j2 == 5 j3 == 4 j4 == 3 j5 == 2
j6 == 1) {
l7.setBackground(Color.red);
l7.setText("特等奖");
} else if (j1 j2 j2 j3 || j3 j2 j2 j1 || j4 j5
j5 j6 || j6 j5 j5 j4 || j1 == j2
j5 == j4 || j1 == j2 j5 == j6 || j3 == j2
j4 == j5 || j5 == j6 j2 == j3) {
l7.setBackground(Color.YELLOW);
l7.setText("一等奖");
} else {
l7.setBackground(Color.lightGray);
l7.setText("未中奖，加油！");
}
}
});
l1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
int j1 = (int) (Math.random() * 10) % 6;
l1.setText(num2[j1]);
int j2 = (int) (Math.random() * 10) % 6;
l2.setText(num2[j2]);
int j3 = (int) (Math.random() * 10) % 6;
l3.setText(num2[j3]);
int j4 = (int) (Math.random() * 10) % 6;
l4.setText(num2[j4]);
int j5 = (int) (Math.random() * 10) % 6;
l5.setText(num2[j5]);
int j6 = (int) (Math.random() * 10) % 6;
l6.setText(num2[j6]);
if (j1 == j2 j2 == j3 || j4 == j5 j5 == j6 || j1 == 1
j2 == 2 j3 == 3 j4 == 4 j5 == 5 j6 == 6
|| j1 == 6 j2 == 5 j3 == 4 j4 == 3 j5 == 2
j6 == 1) {
l7.setBackground(Color.red);
l7.setText("特等奖");
} else if (j1 j2 j2 j3 || j3 j2 j2 j1 || j4 j5
j5 j6 || j6 j5 j5 j4 || j1 == j2
j5 == j4 || j1 == j2 j5 == j6 || j3 == j2
j4 == j5 || j5 == j6 j2 == j3) {
l7.setBackground(Color.YELLOW);
l7.setText("一等奖");
} else {
l7.setBackground(Color.lightGray);
l7.setText("未中奖，加油！");
}
}
});
Font font = new Font("", Font.BOLD, 20);
l1.setFont(font);
l2.setFont(font);
l3.setFont(font);
l4.setFont(font);
l5.setFont(font);
l6.setFont(font);
l7.setFont(font);
l8.setFont(font);
l9.setFont(font);
add(l1);
add(l2);
add(l3);
add(l4);
add(l5);
add(l6);
add(l7);
add(l8);
add(l9);
}
public static void main(String[] args) {
// TODO Auto-generated method stub
frame = new 抽奖游戏();
frame.setTitle("抽奖大战");
frame.setSize(500, 500);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
Q2: 求Java代码
使用循环结构，通过Scanner类从控制台输入每个人的捐款金额，并累加每个人的捐款金额，计算捐款总数和捐款人数，如果捐款总数达到10万元，则计算平均每人捐款金额。
下面是通过输入进行统计，实际过程中还能是通过数据库进行操作，或者表格收集数据进行导入关系数据库进行统计。还可以通过接入微信或者支付宝小程序收款实时统计。
已经有人给过随机数示例，这里给出前端输入的示例：
import java.util.Scanner;
public class CharityDonation { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); int num = 0; // 捐款人数
int total = 0; // 募捐总数
int avg = 0; // 平均每人捐款金额
int donation; // 每个人的捐款金额
while (total 100000 num 1000) {
System.out.print("请输入第" + (num + 1) + "个人的捐款金额：");
donation = scanner.nextInt();
total += donation;
num++;
} if (total = 100000) {
avg = total / num;
System.out.println("捐款总数已达到10万元，捐款人数为" + num + "，平均每人捐款金额为" + avg + "元。");
} else {
System.out.println("征集慈善募捐失败，募捐总数未达到10万元。");
}
scanner.close();
}
}
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