java怎么随机生成整数

new Random().nextInt();

public static void main(String[] args) {
	for (int i = 0; i < 10; i++) {
		System.out.print((int)(Math.random()*100) + " ");
	}		System.out.println("/n" + "-----------------------------");
	// 每次的随机数不同
	Random rand = new Random();
	for (int i = 0; i < 10; i++) {
		System.out.print(rand.nextInt(100) + " ");
	}
	System.out.println("/n" + "-----------------------------");
	// 带种子，每次的随机数相同
	Random rand2 = new Random(10);
	for (int i = 0; i < 10; i++) {
		System.out.print(rand2.nextInt(100) + " ");
	}
	// 生成完全不重复的整数	
          SecureRandom random = new SecureRandom();
	for (int i = 0; i < 10; i++) {
		System.out.print(random.nextInt(100) + " ");
	}
}