用Java绘制图形

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package 软件工程项目1;

import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;

public class Triangle extends JFrame implements ActionListener{
	JTextField text1,text2;
	JLabel label1,label2;
	JPanel panel1,panel2;
	JButton bt1;
	JTextArea area;
	Font f;
	public Triangle() {
		init();
		setVisible(true);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 500,500);
	}
	void init() {
		f=new Font("宋体",Font.BOLD,16);
		setLayout(new FlowLayout());
		label1=new JLabel("三角形的底长:");
		label2=new JLabel("三角形的厚度:");
		text1=new JTextField(5);
		text2=new JTextField(5);
		panel1=new JPanel();
		panel2=new JPanel();
		area=new JTextArea(20,30);
		bt1=new JButton("确定");
		add(label1);
		add(text1);
		add(panel1);
		add(label2);
		add(text2);
		add(panel2);
		add(bt1);
		add(new JScrollPane(area));
		panel1.add(label1);
		panel1.add(text1);
		panel2.add(label2);
		panel2.add(text2);
		bt1.addActionListener(this);
	}
	@Override
	public void actionPerformed(ActionEvent e) {		
		String height1=text1.getText();
		String thickness1=text2.getText();
		int i=0,j=0;
		area.setFont(f);
		if(height1.equals("")||thickness1.equals("")||(Integer.parseInt(height1)<Integer.parseInt(thickness1)))
			{
				area.append("输入数字有误，请重新输入!");
				text2.setText("");
			}
		else {			
			area.setText("");
			int layer=Integer.parseInt(text1.getText().trim());
			int thickness=Integer.parseInt(text2.getText().trim());
			for(i=layer;i>=1;i--)
			{
				if(i<=thickness)
				{
					for(j=1;j<=thickness;j++) 
						area.append("#");
				}
				else if(i>layer-thickness){
					for(j=1;j<=i;j++)
						area.append("#");
				}
				else{
					for(j=1;j<=i;j++)
					{
						if(j<thickness+1)
							area.append("#");
						else if(j>i-thickness)
							area.append("#");
						else
							area.append(" ");
					}
				}
				area.append("n");	
			}		
		
		}
	}
	public static void main(String[] args) {
		new Triangle();
	}

}

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package 软件工程项目1;

import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.*;

public class Square extends JFrame implements ActionListener{
	JTextField text1,text2;
	JLabel label1,label2;
	JPanel panel1,panel2;
	JTextArea area;
	JButton bt1;
	Font f;
	public Square() {
		init();
		setVisible(true);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100,100,500,500);
	}
	void init() {
	    f=new Font("宋体",Font.BOLD,16);
		setLayout(new FlowLayout());
		text1=new JTextField(5);
		text2=new JTextField(5);
		label1=new JLabel("输入正方形高度:");
		label2=new JLabel("输入正方形厚度:");
		area=new JTextArea(20,20);
		panel1=new JPanel();
		panel2=new JPanel();
		bt1=new JButton("确定");
		add(label1);
		add(text1);
		add(panel1);
		add(label2);
		add(text2);
		add(panel2);
		add(bt1);
		add(new JScrollPane(area));
		panel1.add(label1);
		panel1.add(text1);
		panel2.add(label2);
		panel2.add(text2);
		bt1.addActionListener(this);
	}
	
	@Override
	public void actionPerformed(ActionEvent arg0) {
		String height1=text1.getText();
		String thickness1=text2.getText();
		int i=0,j=0;
		area.setFont(f);
		//StringBuffer space= new StringBuffer();
		//String space="";
		if(height1.equals("")||thickness1.equals("")||(Integer.parseInt(height1)<Integer.parseInt(thickness1)))
		{
			area.append("输入数字有误，请重新输入!");
			text2.setText("");
		}		
		else {
			area.append("");	
			int height=Integer.parseInt(text1.getText().trim());
			int thickness=Integer.parseInt(text2.getText().trim());
			for(i=1;i<=height;i++)
			{
				if(i<=thickness)
				{
					for(j=1;j<=height;j++) 
						area.append("#");
				}
				else if(i>height-thickness){
					for(j=1;j<=height;j++)
						area.append("#");
				}
				else{
					for(j=1;j<=height;j++)
					{
						if(j<thickness+1)
							area.append("#");
						else if(j>height-thickness)
							area.append("#");
						else											
							area.append(" ");
					}				
				}
				area.append("n");	
			}
		
		}
	}
	public static void main(String[] args) {
		new Square();
	}

}

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package 软件工程项目1;

import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.*;

public class Rectangle extends JFrame implements ActionListener{
	JTextField text1,text2,text3;
	JLabel label1,label2,label3;
	JPanel panel1,panel2,panel3;
	JTextArea area;
	JButton bt1;
	Font f;
    public Rectangle() {
    	init();
		setVisible(true);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100,100,600,600);
	}
    void init() {
    	 f=new Font("宋体",Font.BOLD,16);
		setLayout(new FlowLayout());
		text1=new JTextField(5);
		text2=new JTextField(5);
		text3=new JTextField(5);
		label1=new JLabel("输入长方形高:");
		label2=new JLabel("输入长方形厚度:");
		label3=new JLabel("输入长方形宽:");
		area=new JTextArea(30,30);
		panel1=new JPanel();
		panel2=new JPanel();
		panel3=new JPanel();
		bt1=new JButton("确定");
		add(label1);
		add(text1);
		add(panel1);
		add(label2);
		add(text2);
		add(panel2);
		add(label3);
		add(text3);
		add(panel3);
		add(bt1);
		add(new JScrollPane(area));
		panel1.add(label1);
		panel1.add(text1);
		panel2.add(label2);
		panel2.add(text2);
		panel3.add(label3);
		panel3.add(text3);
		bt1.addActionListener(this);
	}
	@Override
	public void actionPerformed(ActionEvent arg0) {
		String height1=text1.getText();
		String thickness1=text2.getText();
		String w=text3.getText();
		int i=0,j=0;
		area.setFont(f);
		if(height1.equals("")||thickness1.equals("")||w.equals("")||(Integer.parseInt(height1)<Integer.parseInt(thickness1)))
		{
			area.append("输入数字有误，请重新输入!");
			text2.setText("");
		}
		else {		
		int longg=Integer.parseInt(text1.getText().trim());
		int thickness=Integer.parseInt(text2.getText().trim());
		int wide=Integer.parseInt(text3.getText().trim());
		for(i=1;i<=longg;i++)
		{
			if(i<=thickness)
			{
				for(j=1;j<=wide;j++) 
					area.append("#");
			}
			else if(i>longg-thickness){
				for(j=1;j<=wide;j++)
					area.append("#");
			}
			else{
				for(j=1;j<=wide;j++)
				{
					if(j<thickness+1)
						area.append("#");
					else if(j>wide-thickness)
						area.append("#");
					else
						area.append(" ");          
				}
			}
			area.append("n");	
		}
		
	}

}
	public static void main(String[] args) {
		new Rectangle();
	}
}

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package 软件工程项目1;

import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.*;

public class Pyramid extends JFrame implements ActionListener{
	JTextField text1,text2;
	JLabel label1,label2;
	JPanel panel1,panel2;
	JButton bt1;
	JTextArea area;
	Font f;
	public Pyramid() {
		init();
		setVisible(true);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 500,500);
	}
	void init() {
		f=new Font("宋体",Font.BOLD,16);
		setLayout(new FlowLayout());
		label1=new JLabel("金字塔的层数:");
		label2=new JLabel("金字塔的高度:");
		text1=new JTextField(5);
		text2=new JTextField(5);
		panel1=new JPanel();
		panel2=new JPanel();
		area=new JTextArea(20,20);
		bt1=new JButton("确定");
		add(label1);
		add(text1);
		add(panel1);
		add(label2);
		add(text2);
		add(panel2);
		add(bt1);
		add(new JScrollPane(area));
		panel1.add(label1);
		panel1.add(text1);
		panel2.add(label2);
		panel2.add(text2);
		bt1.addActionListener(this);
	}
	@Override
	public void actionPerformed(ActionEvent e) {
		int level=Integer.parseInt(text1.getText().trim());
		int size=Integer.parseInt(text2.getText().trim());
		area.setFont(f);
		int i=0,j=0,k=0;
		k=level*size;
		for(i=1;i<=k;i++){
			for(j=1;j<=i+k;j++){
				if((j>=k-i)&&(i+j-k-1)%(2*size)==0){
					area.append("/");
				}
				else if((j>k-i)&&((k+i-j)%(2*size))==0){
					area.append("\");
				}
				else if((j>k-i)&&(j<k+i)&&(i%size==0)){
					area.append("_");
				}
				else area.append(" ");
			}
			area.append("n");
		}
		
	}
	public static void main(String[] args) {
		new Pyramid();
	}

}

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package 软件工程项目1;

import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.*;

public class Lingxing extends JFrame implements ActionListener{
	JTextField text1;
	JLabel label1;
	JPanel panel1;
	JButton bt1;
	JTextArea area;
	Font f;
	public Lingxing() {
		init();
		setVisible(true);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 500,500);
	}
	void init() {
		f=new Font("宋体",Font.BOLD,16);
		setLayout(new FlowLayout());
		label1=new JLabel("菱形的高度:");
		text1=new JTextField(5);
		panel1=new JPanel();
		area=new JTextArea(20,20);
		bt1=new JButton("确定");
		add(label1);
		add(text1);
		add(panel1);
		add(bt1);
		add(new JScrollPane(area));
		panel1.add(label1);
		panel1.add(text1);
		bt1.addActionListener(this);
	}
	@Override
	public void actionPerformed(ActionEvent e) {
		int num=Integer.parseInt(text1.getText().trim());
		int i=0,j=0;
		area.setFont(f);
		for ( i = 0; i <= num; i++) {
			for (j = 0; j < num - i; j++) {
				area.append(" ");
			}
			for (int k = 1; k <= 2 * i - 1; k++) {
				if (k == 1 || k == 2 * i - 1) {
					area.append("#");
			} 
				else {
				area.append(" ");
				}
			}
				area.append("n");
			}

			for ( i = num - 1; i > 0; i--) {
				for ( j = 0; j < num - i; j++) {
					area.append(" ");
			}
			for (int k = 1; k <= 2 * i - 1; k++) {
				if (k == 1 || k == 2 * i - 1) {
					area.append("#");
			} 
				else {
					area.append(" ");
				}
			}
			area.append("n");
		}
		
	}
	public static void main(String[] args) {
		new Lingxing();
	}

}

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package 软件工程项目1;

import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.*;

public class SelectGraph extends JFrame implements ActionListener{
	JLabel label;
	JPanel panel;
	JComboBox<String> combox;
	JButton bt;
	public SelectGraph() {	
		init();
		setVisible(true);
		setBounds(100,100,300,300);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);				
	}
	void init(){
		setLayout(new FlowLayout());
		String string[]= {"长方形","正方形","三角形","菱形","金字塔"};
		label=new JLabel("请选择图形");
		combox=new JComboBox<String>(string);
		bt=new JButton("确定");
		panel=new JPanel();
		add(label);
		add(combox);
		add(panel);
		add(bt);
		panel.add(label);
		panel.add(combox);
		bt.addActionListener(this);		
	}
		
	public static void main(String[] args) {
		new SelectGraph();
	}

	@Override
	public void actionPerformed(ActionEvent e) {
		String strItem=combox.getSelectedItem().toString();  //获取选中的值
		if(strItem.equals("长方形")) {
			new Rectangle();
		}
		if(strItem.equals("三角形")) {
			new Triangle();
		}
		if(strItem.equals("正方形")) {
			new Square();
		}
		if(strItem.equals("菱形")) {
			new Lingxing();
		}
		if(strItem.equals("金字塔")) {
			new Pyramid();
		}
		
	}

}