泛型

[Java]Generics(泛型)

參考資料:http://blog.johnsonlu.org/category/program/java/

test1.java

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1	package mypackage;

2	public class test1 {

3	private int num;

4	public void setVal(int num) {

5	this.num = num;

6

}

7

8	public int getVal() {

9	return this.num;

10

}

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}

test2.java

1	package mypackage;

2	public class test2 {

3	private String str;

4	public void setVal(String str) {

5	this.str = str;

6

}

7

8	public String getVal() {

9	return this.str;

10

}

11

}

index.java

1	import mypackage.test1;

2	import mypackage.test2;

3	public class index {

4	public static void main(String[] argv) {

5	test1 t1 = new test1();

6	test2 t2 = new test2();

7

8	t1.setVal(123);

9	System.out.println(t1.getVal());

10	t2.setVal("This is test");

11	System.out.println(t2.getVal());

12

}

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}