使用泛型统一传入的参数类型

class Info<T>{
private T var;
public T getVar(){
return var;
}
public void setVar(T var){
this.var = var;
}
public String toString(){
return this.var.toString();
}

}

public class Test {

public static void main(String[] args) {

Info<String> i1 = new Info<String>();
Info<String> i2 = new Info<String>();
i1.setVar("张三");
i2.setVar("李四");
add(i1,i2);
}
public static <T> void add(Info<T>i1,Info<T> i2){
System.out.println(i1.getVar()+"---"+i2.getVar());
}

}