Java 5.0 ·ºÐÍÖ® ÆÕͨ·ºÐÍ
package Demo;
// ÆÕͨ·ºÐÍ
class Point<T> { // ´Ë´¦¿ÉÒÔËæ±ãд±êʶ·ûºÅ£¬TÊÇtypeµÄ¼ò³Æ
private T var; // varµÄÀàÐÍÓÉTÖ¸¶¨£¬¼´£ºÓÉÍⲿָ¶¨
public T getVar() { // ·µ»ØÖµµÄÀàÐÍÓÉÍⲿ¾ö¶¨
return var;
}
public void setVar(T var) { // ÉèÖõÄÀàÐÍÒ²ÓÉÍⲿ¾ö¶¨
this.var = var;
}
}
public class GenericsDemo06 {
public static void main(String[] args) {
Point<String> p = new Point<String>(); // ÀïÃæµÄvarÀàÐÍΪStringÀàÐÍ
p.setVar("it"); // ÉèÖÃ×Ö·û´®
System.out.println("Length Of String : " + p.getVar().length()); // È¡µÃ×Ö·û´®µÄ³¤¶È
}
}
package Demo;
// ÆÕͨ·ºÐÍ
class Notepad<K, V> { // ´Ë´¦Ö¸¶¨ÁËÁ½¸ö·ºÐÍÀàÐÍ
private K key; // ´Ë±äÁ¿µÄÀàÐÍÓÉÍⲿ¾ö¶¨
private V value; // ´Ë±äÁ¿µÄÀàÐÍÓÉÍⲿ¾ö¶¨
public K getKey() {
return this.key;
}
public void setKey(K key) {
this.key = key;
}
public V getValue() {
return this.value;
}
public void setValue(V value) {
this.value = value;
}
}
public class GenericsDemo09 {
public static void main(String[] args) {
Notepad<Integer, String> t = null; // ¶¨ÒåÁ½¸ö·ºÐÍÀàÐ͵ĶÔÏó
t = new Notepad<Integer, String>(); // ÀïÃæµÄkeyΪIntegerÀàÐÍ£¬valueΪStringÀàÐÍ
t.setKey(99); // ÉèÖõÚÒ»¸öÄÚÈÝ
t.setValue("it"); // ÉèÖõڶþ¸öÄÚÈÝ
System.out.println("Key Of Integer : " + t.getKey()
+ " / Value Of String : " + t.getValue()); // È¡µÃÐÅÏ¢
}
}
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n public StringBuffer(int);
n public StringBuffer(String);
n ......
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String s1 = "this is a string!";
String s2 = new String("this is another string!");
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package sort;
import java.util.Random;
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public class CopyOfTestThreadPool {
public static void main(String args[]) thr ......