Java——泛型机制

package day04;

public class TypeDemo<T> {
	private T x;
	public TypeDemo(T d) {
		this.x = d;
	}
	public T  getX() {
		return x;
	}
	public void setX(T  x) {
		this.x = x;
	}
	public String toString() {
		return x+"";
	}
}

package day04;

public class TestTypeDemo {
	public static void main(String[] args) {
		TypeDemo<String> t = new TypeDemo<String>("");
		TypeDemo t1 = new TypeDemo("");
		String s = t.getX();
		
		TypeDemo<Integer> yy = new TypeDemo<Integer>(1);
	}
}