JAVAé没æå¤ç»§æ¿ï¼ä¸ä¸ªç±»ä¹è½æä¸ä¸ªç¶ç±»ã
è继æ¿ç表ç°å°±æ¯å¤æãä¸ä¸ªç¶ç±»å¯ä»¥æå¤ä¸ªåç±»ï¼èå¨åç±»éå¯ä»¥éåç¶ç±»çæ¹æ³ï¼ä¾å¦æ¹æ³print()ï¼ï¼è¿æ ·æ¯ä¸ªåç±»ééåç代ç ä¸ä¸æ ·ï¼èªç¶è¡¨ç°å½¢å¼å°±ä¸ä¸æ ·ãè¿æ ·ç¨ç¶ç±»çåéå»å¼ç¨ä¸åçåç±»ï¼å¨è°ç¨è¿ä¸ªç¸åçæ¹æ³print()çæ¶åå¾å°çç»æå表ç°å½¢å¼å°±ä¸ä¸æ ·äºï¼è¿å°±æ¯å¤æï¼ç¸åçæ¶æ¯ï¼ä¹å°±æ¯è°ç¨ç¸åçæ¹æ³ï¼ä¼æä¸åçç»æã举ä¾è¯´æï¼
//ç¶ç±»
public class Father{
//ç¶ç±»æä¸ä¸ªæå©åæ¹æ³
public void hitChild(){}
}
//åç±»1
public class Son1 extends Father{
//éåç¶ç±»æå©åæ¹æ³
public void hitChild(){
System.out.println("为ä»ä¹ææï¼æåéä»ä¹äºï¼"); }
}
//åç±»2
public class Son2 extends Father{
//éåç¶ç±»æå©åæ¹æ³ public void hitChild(){
System.out.println("æç¥ééäºï¼å«æäºï¼"); }
}
//åç±»3
public class Son3 extends Father{
//éåç¶ç±»æå©åæ¹æ³ public void hitChild(){
System.out.println("æè·ï¼ä½ æä¸çï¼"); }
}
//æµè¯ç±»
public class Test{
public static void main(String args[]){
Father father;
father = new Son1();
father.hitChild();
father = new Son2();
father.hitChild();
father = new Son3();
father.hitChild();
}
}
é½è°ç¨äºç¸åçæ¹æ³ï¼åºç°äºä¸åçç»æï¼è¿å°±æ¯å¤æç表ç°ï¼
2.JAVAä¸æ²¡æå¤ç»§æ¿ï¼èç¨æ¥å£å®ç°äºå¤ç»§æ¿ï¼ä¸ä¸ªç±»ææ¯å¯ä»¥åæ¶å®ç°å¤ä¸ªæ¥å£ï¼ï¼å°±ç¸å½äºC++éä¸ä¸ªç±»åæ¶ç»§æ¿äºå¤ä¸ªç±»ï¼ï¼ä¾å¦ï¼
public class Son implements Father1,Father2,Father3{
}
æ¥å£æå©äºä»£ç åè½çæ©å±ï¼å¢å æ°çåè½ï¼ï¼è继æ¿åæå©äºä»£ç åè½çä¿®æ¹ï¼ææ§çåè½æ¹ææ°çåè½ï¼ï¼è¿éæ§åè½çä¿®æ¹åæ°åè½çå¢å åææ¯ä¸ä¿®æ¹æ§çåè½ï¼æ§çåè½ä»ç¶å¯ä»¥ä½¿ç¨ï¼æ§ç±»ç代ç ä¹ä¸åä¿®æ¹ï¼
æ¥çä¸é¢ç继æ¿ä¸¾ä¾ï¼ä¸é¢ä¾åä¸çåç±»æ们ç»ç§°ä¸ºä¸ä»£åç±»
1.ç¨ç»§æ¿ä¿®æ¹æ§çåè½ã
ç°å¨å¦æä¸ä»£Son1çåè½æå©åï¼ä¹å°±æ¯æ¹æ³hitChild()éè¾¹çåè½å®ç°æé®é¢ï¼æ们è¦æå
·ä½å®ç°ä¿®æ¹æï¼é£ä¹æ们å¯ä»¥éæ°åä¸ä¸ªæ°çäºä»£åç±»Son11继æ¿èªä¸ä»£åç±»Son1ï¼å¹¶éåå
¶hitChild()æ¹æ³ã
//äºä»£åç±»
public class Son11 extends Son1{
//éåç¶ç±»æå©åæ¹æ³
public void hitChild(){ System.out.println("ææ¯äºä»£å类对æ¤æ¹æ³çæ°å®ç°");
}
}
2.ç¨æ¥å£å®ç°å¢å æ°çåè½ã
ç°å¨ç±»Son1å·²ç»æäºâæå©åâåè½ï¼ä¹å°±æ¯æ¹æ³ï¼ï¼èæ们æäºæ°çéæ±ï¼æ们éè¦å®è¿è¦æä¸ä¸ªæ°çåè½âå® å©åâï¼æ°æ¹æ³pet();ï¼ãèæ§ç代ç ä¸è½å¨ï¼é£ä¹æ们å¯ä»¥å®ä¹ä¸ä¸ªæ°çæ¥å£ï¼PetInterFaceï¼ï¼æ¥å£éå®ä¹è¿ä¸ªæ¹æ³pet()ç声æãåéæ°åä¸ä¸ªäºä»£åç±»Son11ï¼è®©å®å
继æ¿ç±»Son1ï¼åæ¶å®ç°æ¥å£ PetInterFaceï¼å¹¶å®ç°æ¥å£éç pet()æ¹æ³ï¼
//æ°æ¥å£
public interface PetInterFace{
//æ°åè½æ¹æ³ public void pet();
}
//äºä»£åç±»
public class Son11 extends Son1 implements PetInterFace{
//å®ç°æ¥å£æ¹æ³
public void pet(){
System.out.println("ç¶äº²å¾ç±æï¼");
}
}
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