看如何输入数组

System.in.read & 数组

public class Example12 {
    public void input(int[] arr) {
    	System.out.println("请输入5个整数，每输入一个请按回车键：");
    	try {
    		byte[] buf = new byte[20];
    		
    		for (int i = 0; i < arr.length; i++) {
    			System.in.read(buf);
    			String str = new String(buf);
    			arr[i] = Integer.parseInt(str.trim());
    		}
    	} catch (Exception e) {
    		System.out.println("程序遇到异常，即将终止");
    		System.exit(0);
    	}
    }
    
    public int getMax(int[] arr) {
    	int max = arr[0];
    	for (int i = 1; i < arr.length; i++) {
    		if (max < arr[i]) {
    			max = arr[i];
    		}
    	}
    	return max;
    }
    
    public int getSum(int[] arr) {
    	int sum = 0;
    	for (int i = 0; i < arr.length; i++) {
    		sum += arr[i];
    	}
    	return sum;
    }
    
    public void echo(int[] arr) {
    	System.out.println("数组各元素如下：");
    	for (int i = 0; i < arr.length; i++) {
    		System.out.print(arr[i] + " ");
    	}
    	System.out.println();
    }
}



public class Example12_Test {
    
	public static void main(String[] args) {
		 int[] array = new int[5];
		 Example12 ob = new Example12();
		 
		 ob.input(array);
		 int max = ob.getMax(array);
		 int sum = ob.getSum(array);
		 ob.echo(array);
	
		 System.out.println("其中的最大值为: " + max);
		 System.out.println("其和值为: " + sum);
	}
}