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java雷电源代码 java扫雷源代码加注解

如何在Eclipse中查看Java类库的源代码以及相应的api

java在eclipse中有两种被运行的方式(jre的方式和jdk的方式)。你看不到源码就是因为你是通过jre的方式运行的。

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通过eclipse进入菜单Window-Preferences-Java-Installed JREs。在右边的表格中添加或者修改已有的Installed JREs。

这里以添加为例:点击Add...-Standard VM-Next-Directory...目录选择jdk的安装(必须为JDK,不能是JRE,例如:C:\Program Files\Java\jdk1.8.0_65),然后保存退出。这是再返回eclipse中,点击jdk自带的任何一个类,都能看到源码了。

希望可以帮助到你,有问题请继续追问,没问题望采纳!

扫雷java源代码

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

public class Frame

extends JFrame {

JTextField text;

JLabel nowBomb, setBomb;

int BombNum, BlockNum; // 当前雷数,当前方块数

int rightBomb, restBomb, restBlock; // 找到的地雷数,剩余雷数,剩余方块数

JButton start = new JButton(" 开始 ");

JPanel MenuPamel = new JPanel();

JPanel bombPanel = new JPanel();

Bomb[][] bombButton;

JPanel c;

BorderLayout borderLayout1 = new BorderLayout();

GridLayout gridLayout1 = new GridLayout();

public Frame() {

try {

setDefaultCloseOperation(EXIT_ON_CLOSE);

jbInit();

}

catch (Exception exception) {

exception.printStackTrace();

}

}

private void jbInit() throws Exception {

c = (JPanel) getContentPane();

setTitle("扫雷");

c.setBackground(Color.WHITE);

MenuPamel.setBackground(Color.GRAY);

c.setLayout(borderLayout1);

setSize(new Dimension(600, 600));

setResizable(false);

BlockNum = 144;

BombNum = 10;

text = new JTextField("10 ", 3);

nowBomb = new JLabel("当前雷数" + ":" + BombNum);

setBomb = new JLabel("设置地雷数");

start.addActionListener(new Frame1_start_actionAdapter(this));

MenuPamel.add(setBomb);

MenuPamel.add(text);

MenuPamel.add(start);

MenuPamel.add(nowBomb);

c.add(MenuPamel, java.awt.BorderLayout.SOUTH);

bombPanel.setLayout(gridLayout1);

gridLayout1.setColumns( (int) Math.sqrt(BlockNum));

gridLayout1.setRows( (int) Math.sqrt(BlockNum));

bombButton = new Bomb[ (int) Math.sqrt(BlockNum)][ (int) Math.sqrt(BlockNum)];

for (int i = 0; i (int) Math.sqrt(BlockNum); i++) {

for (int j = 0; j (int) Math.sqrt(BlockNum); j++) {

bombButton[i][j] = new Bomb(i, j);

//bombButton[i][j].setSize(10, 10);

bombButton[i][j].setFont(new Font("", Font.PLAIN, 14));//设置字体大小

bombButton[i][j].setForeground(Color.white);

bombButton[i][j].addMouseListener(new Bomb_mouseAdapter(this));

bombButton[i][j].addActionListener(new Bomb_actionAdapter(this));

bombPanel.add(bombButton[i][j]);

}

}

c.add(bombPanel, java.awt.BorderLayout.CENTER);

startBomb();

}

/* 开始按钮 */

public void start_actionPerformed(ActionEvent e) {

int num=Integer.parseInt(text.getText().trim());

if (num = 5 num 50) {

BombNum = num;

startBomb();

}

else if (num 5) {

JOptionPane.showMessageDialog(null, "您设置的地雷数太少了,请重设!", "错误",

JOptionPane.ERROR_MESSAGE);

num=10;

BombNum = num;

}

else {

JOptionPane.showMessageDialog(null, "您设置的地雷数太多了,请重设!", "错误",

JOptionPane.ERROR_MESSAGE);

num=10;

BombNum = num;

}

}

/* 开始,布雷 */

public void startBomb() {

nowBomb.setText("当前雷数" + ":" + BombNum);

for (int i = 0; i (int) Math.sqrt(BlockNum); i++) {

for (int j = 0; j (int) Math.sqrt(BlockNum); j++) {

bombButton[i][j].isBomb = false;

bombButton[i][j].isClicked = false;

bombButton[i][j].isRight = false;

bombButton[i][j].BombFlag = 0;

bombButton[i][j].BombRoundCount = 9;

bombButton[i][j].setEnabled(true);

bombButton[i][j].setText("");

bombButton[i][j].setFont(new Font("", Font.PLAIN, 14));//设置字体大小

bombButton[i][j].setForeground(Color.BLUE);

rightBomb = 0;

restBomb = BombNum;

restBlock = BlockNum - BombNum;

}

}

for (int i = 0; i BombNum; ) {

int x = (int) (Math.random() * (int) (Math.sqrt(BlockNum) - 1));

int y = (int) (Math.random() * (int) (Math.sqrt(BlockNum) - 1));

if (bombButton[x][y].isBomb != true) {

bombButton[x][y].isBomb = true;

i++;

}

}

CountRoundBomb();

}

/* 计算方块周围雷数 */

public void CountRoundBomb() {

for (int i = 0; i (int) Math.sqrt(BlockNum); i++) {

for (int j = 0; j (int) Math.sqrt(BlockNum); j++) {

int count = 0;

// 当需要检测的单元格本身无地雷的情况下,统计周围的地雷个数

if (bombButton[i][j].isBomb != true) {

for (int x = i - 1; x i + 2; x++) {

for (int y = j - 1; y j + 2; y++) {

if ( (x = 0) (y = 0)

(x ( (int) Math.sqrt(BlockNum)))

(y ( (int) Math.sqrt(BlockNum)))) {

if (bombButton[x][y].isBomb == true) {

count++;

}

}

}

}

bombButton[i][j].BombRoundCount = count;

}

}

}

}

/* 是否挖完了所有的雷 */

public void isWin() {

restBlock = BlockNum - BombNum;

for (int i = 0; i (int) Math.sqrt(BlockNum); i++) {

for (int j = 0; j (int) Math.sqrt(BlockNum); j++) {

if (bombButton[i][j].isClicked == true) {

restBlock--;

}

}

}

if (rightBomb == BombNum || restBlock == 0) {

JOptionPane.showMessageDialog(this, "您挖完了所有的雷,您胜利了!", "胜利",

JOptionPane.INFORMATION_MESSAGE);

startBomb();

}

}

/** 当选中的位置为空,则翻开周围的地图* */

public void isNull(Bomb ClickedButton) {

int i, j;

i = ClickedButton.num_x;

j = ClickedButton.num_y;

for (int x = i - 1; x i + 2; x++) {

for (int y = j - 1; y j + 2; y++) {

if ( ( (x != i) || (y != j)) (x = 0) (y = 0)

(x ( (int) Math.sqrt(BlockNum)))

(y ( (int) Math.sqrt(BlockNum)))) {

if (bombButton[x][y].isBomb == false

bombButton[x][y].isClicked == false

bombButton[x][y].isRight == false) {

turn(bombButton[x][y]);

}

}

}

}

}

/* 翻开 */

public void turn(Bomb ClickedButton) {

ClickedButton.setEnabled(false);

ClickedButton.isClicked = true;

if (ClickedButton.BombRoundCount 0) {

ClickedButton.setText(ClickedButton.BombRoundCount + "");

}

else {

isNull(ClickedButton);

}

}

/* 左键点击 */

public void actionPerformed(ActionEvent e) {

if ( ( (Bomb) e.getSource()).isClicked == false

( (Bomb) e.getSource()).isRight == false) {

if ( ( (Bomb) e.getSource()).isBomb == false) {

turn( ( (Bomb) e.getSource()));

isWin();

}

else {

for (int i = 0; i (int) Math.sqrt(BlockNum); i++) {

for (int j = 0; j (int) Math.sqrt(BlockNum); j++) {

if (bombButton[i][j].isBomb == true) {

bombButton[i][j].setText("b");

}

}

}

( (Bomb) e.getSource()).setForeground(Color.RED);

( (Bomb) e.getSource()).setFont(new Font("", Font.BOLD, 20));

( (Bomb) e.getSource()).setText("X");

JOptionPane.showMessageDialog(this, "你踩到地雷了,按确定重来", "踩到地雷", 2);

startBomb();

}

}

}

/* 右键点击 */

public void mouseClicked(MouseEvent e) {

Bomb bombSource = (Bomb) e.getSource();

boolean right = SwingUtilities.isRightMouseButton(e);

if ( (right == true) (bombSource.isClicked == false)) {

bombSource.BombFlag = (bombSource.BombFlag + 1) % 3;

if (bombSource.BombFlag == 1) {

if (restBomb 0) {

bombSource.setForeground(Color.RED);

bombSource.setText("F");

bombSource.isRight = true;

restBomb--;

}

else {

bombSource.BombFlag = 0;

}

}

else if (bombSource.BombFlag == 2) {

restBomb++;

bombSource.setText("Q");

bombSource.isRight = false;

}

else {

bombSource.setText("");

}

if (bombSource.isBomb == true) {

if (bombSource.BombFlag == 1) {

rightBomb++;

}

else if (bombSource.BombFlag == 2) {

rightBomb--;

}

}

nowBomb.setText("当前雷数" + ":" + restBomb);

isWin();

}

}

public static void main(String[] args) {

Frame frame = new Frame();

frame.setVisible(true);

}

}

class Frame1_start_actionAdapter

implements ActionListener {

private Frame adaptee;

Frame1_start_actionAdapter(Frame adaptee) {

this.adaptee = adaptee;

}

public void actionPerformed(ActionEvent e) {

adaptee.start_actionPerformed(e);

}

}

////////////////////////////

class Bomb

extends JButton {

int num_x, num_y; // 第几号方块

int BombRoundCount; // 周围雷数

boolean isBomb; // 是否为雷

boolean isClicked; // 是否被点击

int BombFlag; // 探雷标记

boolean isRight; // 是否点击右键

public Bomb(int x, int y) {

num_x = x;

num_y = y;

BombFlag = 0;

BombRoundCount = 9;

isBomb = false;

isClicked = false;

isRight = false;

}

}

class Bomb_actionAdapter

implements ActionListener {

private Frame adaptee;

Bomb_actionAdapter(Frame adaptee) {

this.adaptee = adaptee;

}

public void actionPerformed(ActionEvent e) {

adaptee.actionPerformed(e);

}

}

class Bomb_mouseAdapter

extends MouseAdapter {

private Frame adaptee;

Bomb_mouseAdapter(Frame adaptee) {

this.adaptee = adaptee;

}

public void mouseClicked(MouseEvent e) {

adaptee.mouseClicked(e);

}

}

eclipse中如何用快捷键查找java类库中的源码

这个分两步:

1、鼠标放到你要看的函数上面,按ctrl键,可以看到定义的提示如下图:

2、这时可以选择定义原型或者执行代码然后单击鼠标左键:

什么是java源代码 怎么查看

你说的java源代码是指编译成的class文件前的java文件。

当我们运行.java文件时,它会被系统编译成.class文件,例如Test.java编译之后就是Test.class,

源文件就是指Test.java文件,

一般部署项目时,有.class文件就可以发布运行了,但是如果想修改这个系统,.class是不能修改的,要有.java文件才能修改

也可以上网去下反编译软件,就是能把.class文件大部分还原成.java文件的工具,但不是100%还原,而且如果不是正版的,小心有毒啊,什么的。


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