datahide.java

JAVA的一些基础教程

class Computer{
	private String cpu ;
	public String 显示器;

	public Computer(String monitor)
	{
		cpu = "英特尔P3塞扬1G";
		显示器 = monitor;
	}

	private void 获取CUP型号()
	{
		System.out.println(cpu);
	}
	public void 显示()
	{
		System.out.println(显示器 );
		获取CUP型号();
	}
	public static void main(String arg[])
	{
		Computer ibm = new Computer("IBM");
		ibm.显示();
		System.out.println("CPU:"+ ibm.cpu);	//正确，可以访问
	}
}
public class DataHide
	{
	public static void main(String arg[])
	{
		Computer dell = new Computer("美格");
		dell.显示();
//		System.out.println("CPU:"+ dell.cpu);	//错误，不能访问
	}
}