Java之自定义泛型

自定义泛型
一个参数

package set;

public class NumGeneric<T> {
	private T num;
	private T getNum() {
		return num;
	}
	private void setNum(T num) {
		this.num = num;
	}
	//测试

	public static void main(String[] args) {
		NumGeneric<Integer>  intNum =new NumGeneric<Integer>();
		intNum.setNum(10);
		System.out.println("Integer"+intNum.getNum());
		
		NumGeneric<Float>floatnum = new NumGeneric<Float>();
		floatnum.setNum(10.5f);
		System.out.println("Float"+floatnum.getNum());
		

	}

}

运行结果

两个参数

package set;

public class TwoNumGeneric<T,X>{
	private T num1;
	private X num2;
	
	public TwoNumGeneric() {
		
	}

	public void  Two(T num1, X num2) {
		
		this.num1 = num1;
		this.num2 = num2;
	}


	public T getNum1() {
		return num1;
	}


	public void setNum1(T num1) {
		this.num1 = num1;
	}


	public X getNum2() {
		return num2;
	}


	public void setNum2(X num2) {
		this.num2 = num2;
	}


	public static void main(String[] args) {
		 TwoNumGeneric<Integer,Float> intNum = new TwoNumGeneric<>();
		 intNum.Two(10,50.9f);
		 System.out.println("num1"+intNum.getNum1());
		 System.out.println("num2"+intNum.getNum2());
		
	}

}

运行结果

自定义泛型方法

package set;

public class GenericMethod {
	public<T>void printValue(T t){
		System.out.println(t);
	}

	public static void main(String[] args) {
		GenericMethod gm = new GenericMethod();
		gm.printValue("Hello");
		gm.printValue(1230);
		gm.printValue(509.05f);

	}

}

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