testtool.java

这是一张java应用教程的随书光盘

class Tool{
	void  display(int a , int b, int c){
		int k = a + b + c;
		System.out.println("the result is:" + k);
	}
	String getInfo(){
		return "this is from class Tool";	
	}
}

public class TestTool{
	public static void main(String[] args){
		Tool t = new Tool();
		t. display(6,7,8);		
		System.out.println(t.getInfo());
	  }
}