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sudo apt-get install sun-java6-jdk
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sudo update-alternatives --config java
Ö´Ðкó»á³öÏÖÀàËÆÈçÏÂµÄ»Ãæ:
There are 2 alternatives which provide `java'.
Selection Alternative
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1 /usr/lib/jvm/java-6-openjdk/jre/bin/java
2 /usr/lib/jvm/java-6-sun/jre/bin/java
Press enter to keep the default[*], or type selection number:
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$sudo gedit /etc/environmet
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CLASSPATH=.:/usr/lib/jvm/java-6-sun/lib
JAVA_HOME=/usr/lib/jvm/java-6-sun
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$sudo gedit /etc/jvm
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$sudo apt-get install eclipse
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2009-01-15 08:18:55
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package Demo;
// ͨÅä·û
class Info14<T> {
private T var; // ¶¨Òå·ºÐͱäÁ¿
public void setVar(T var) {
this.var = var;
}
public T getVar() {
return this.var;
}
public String toString() { // Ö±½Ó´òÓ¡
return this.var.toString();
}
}
public class GenericsDemo14 {
public ......
package Demo;
// Java·ºÐÍ·½·¨
class Demo26 {
public <T> T fun(T t) { // ¿ÉÒÔ½ÓÊÕÈÎÒâÀàÐ͵ÄÊý¾Ý
return t; // Ö±½Ó°Ñ²ÎÊý·µ»Ø
}
}
public class GenericsDemo26 {
public static void main(String args[]) {
Demo26 d = new Demo26(); // ʵÀý»¯Demo¶ÔÏó
String str = d.fun("it"); // ´«µÝ× ......