Java程序打印前10个偶数自然数

编写一个Java程序，使用for循环打印前10个偶数自然数。

package NumPrograms;

public class First10EvenNaturalNum1 {

	public static void main(String[] args) {
		
		System.out.println("The First 10 Even Natural Numbers are");
		for(int i = 1; i <= 10; i++) 
		{
			System.out.println(2 * i);
		}
	}
}

Java Program to Print First 10 Even Natural Numbers

Java程序使用while循环打印前10个偶数自然数。

package NumPrograms;

public class First10EvenNaturalNum2 {

	public static void main(String[] args) {
		
		System.out.println("The First 10 Even Natural Numbers are");
		
		int i = 1;
		
		while( i <= 10) 
		{
			System.out.println(2 * i);
			i++;
		}
	}
}

The First 10 Even Natural Numbers are
2
4
6
8
10
12
14
16
18
20

这个Java示例使用do while循环显示前10个偶数自然数。

package NumPrograms;

public class First10EvenNaturalNum3 {

	public static void main(String[] args) {
		
		System.out.println("The First 10 Even Natural Numbers are");
		
		int i = 1;
		
		do 
		{
			System.out.println(2 * i);

		} while(++i <= 10);
	}
}

The First 10 Even Natural Numbers are
2
4
6
8
10
12
14
16
18
20

请参考