weixin_45344252的博客

#define _CRT_SECURE_NO_WARNINGS#include<stdio.h>#include<stdlib.h>typedef struct treeNode{ int data; struct treeNode* rChild; struct treeNode* lChild;}tree, *BinTree;typedef stru...

1.File类import java.io.File;public class Main{ public static void main(String[] args)throws Exception { File file=new File("F:"+File.separator+"JavaSE"+File.separator+"JaveEdu"+File.separator+"...

import java.io.IOException;class myMath{ public static int div(int x,int y) throws ArithmeticException,NullPointerException//声明可能抛出的异常，该方法的调用者要处理这些异常 { String s=null; System.out.println(s.equ...

class MyThread extends Thread//定义线程类{ private String name; public MyThread(String name) { this.name=name; } public void run()//覆写run方法 { for(int i=0;i<10;i++) { System.out.prin...

class Message<T extends Number>{ public T info; public T getInfo() { return this.info; } public void setInfo(T info) { this.info=info; }}public class TestDemo{ public static ...