wp/nwyj/sample/samples/technology/reference/CloneMain.java

package samples.technology.reference;


//ʲôÊÇÓ°×Óclone
class UnCloneA {
	
	private int i; 
	public UnCloneA(int ii) {
		i = ii;
	}
	public void doublevalue() {
		i = i * 2;
	} 
	public String toString() { 
		return Integer.toString(i); 
	} 
}


class CloneB implements Cloneable{
	
	public int aInt; 
	public UnCloneA unCA = new UnCloneA(111); 
	
	
	public Object clone(){
		
		CloneB o = null; 
		try{
			o = (CloneB)super.clone(); 
		}catch(CloneNotSupportedException e){ 
			e.printStackTrace(); 
		} 
		return o; 
	} 
	
} 


public class CloneMain {
	
	public static void main(String[] a){
		
			CloneB b1 = new CloneB(); 
			b1.aInt = 11; 
			System.out.println("before clone,b1.aInt = "+ b1.aInt); 
			System.out.println("before clone,b1.unCA = "+ b1.unCA); 
			
			
			CloneB b2 = (CloneB)b1.clone(); 
			b2.aInt = 22; 
			b2.unCA.doublevalue(); 
			System.out.println("================================="); 
			System.out.println("after clone,b1.aInt = "+ b1.aInt); 
			System.out.println("after clone,b1.unCA = "+ b1.unCA); 
			System.out.println("================================="); 
			System.out.println("after clone,b2.aInt = "+ b2.aInt); 
			System.out.println("after clone,b2.unCA = "+ b2.unCA); 
			
	}
}