java创建两个线程，要求如下： （1）一个线程输出100个1~26，另一个线程输出100个A~Z。 （2）一个线程使用集成Thread 类的写法，另一个线程使用实现Runnable接口的写法。 输出格式: 每一行输出一个1~26数字或者是A~Z的字符

以下是Java创建两个线程的示例代码：

1. 使用继承Thread类的写法：

class NumberThread extends Thread {
    @Override
    public void run() {
        for (int i = 1; i <= 100; i++) {
            System.out.print(i + " ");
            if (i % 26 == 0) {
                System.out.println();
            }
        }
    }
}

class LetterThread extends Thread {
    @Override
    public void run() {
        for (char c = 'A'; c <= 'Z'; c++) {
            System.out.print(c + " ");
            if (c == 'Z') {
                System.out.println();
            }
        }
    }
}

public class Main {
    public static void main(String[] args) {
        NumberThread numberThread = new NumberThread();
        LetterThread letterThread = new LetterThread();
        numberThread.start();
        letterThread.start();
    }
}

2. 使用实现Runnable接口的写法：

class NumberRunnable implements Runnable {
    @Override
    public void run() {
        for (int i = 1; i <= 100; i++) {
            System.out.print(i + " ");
            if (i % 26 == 0) {
                System.out.println();
            }
        }
    }
}

class LetterRunnable implements Runnable {
    @Override
    public void run() {
        for (char c = 'A'; c <= 'Z'; c++) {
            System.out.print(c + " ");
            if (c == 'Z') {
                System.out.println();
            }
        }
    }
}

public class Main {
    public static void main(String[] args) {
        Thread numberThread = new Thread(new NumberRunnable());
        Thread letterThread = new Thread(new LetterRunnable());
        numberThread.start();
        letterThread.start();
    }
}