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  • java进制转换器 图形用户界面 十进制及其相反数分别转化为二,四,八,十六进制

    package com.rgy.Test;
    
    import java.awt.Color;
    import java.awt.FlowLayout;
    import java.awt.GridLayout;
    import java.awt.Label;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    
    import javax.swing.JFrame;
    import javax.swing.JPanel;
    import javax.swing.JTextField;
    
    import com.rgy.Tools.Tools;
    
    public class SystemSwitch {
    	private JPanel panel_left;
    	private JPanel panel_right;
    	private Label label[];
    	private JTextField text_field[];
    	public void init(){
    		JFrame f=new JFrame("int整数的进制转化");
    		f.setVisible(true);
    		f.setLocation(500, 250);
    		f.setBackground(Color.lightGray);
    		f.setLayout(new FlowLayout());
    		
    		panel_left=new JPanel();
    		panel_right=new JPanel();
    		panel_left.setLayout(new GridLayout(5,1,10,10));
    		panel_right.setLayout(new GridLayout(5,2,10,10));
    		
    		String str[]={"十进制","二进制","四进制","八进制","十六进制"};
    		label=new Label[5];//重要
    		for(int i=0;i<label.length;i++){
    			label[i]=new Label(str[i],Label.RIGHT);
    			panel_left.add(label[i]);
    		}
    		
    		text_field=new JTextField[10];//重要
    		for(int i=0;i<text_field.length;i++){
    			text_field[i]=new JTextField(20);
    			panel_right.add(text_field[i]);
    			if(i%2==1){
    				text_field[i].setEditable(false);
    			}
    		}
    		
    		f.add(panel_left);
    		f.add(panel_right);
    		f.pack();
    		
    		text_field[0].addActionListener(new ActionListener() {
    			public void actionPerformed(ActionEvent e) {
    				String str,str1,str2="",str3="",str4="";//辅助变量
    				int len;
    				int temp;
    				str=text_field[0].getText();
    				temp=Integer.parseInt(str);
    				text_field[1].setText(""+(-temp));//十进制负数
    				//正数二进制
    				if(Integer.toBinaryString(temp).length()<=32){
    					len=32-Integer.toBinaryString(temp).length();
    					for(int i=0;i<len-1;i++){
    						str4=str4+"0";
    					}
    					text_field[2].setText(str4+Integer.toBinaryString(temp));
    					str4="";
    				}
    				else{
    					return;
    				}
    				//相反数二进制
    				text_field[3].setText(Integer.toBinaryString(-temp));
    				//相反数四进制(利用负数的二进制分别进行两位合并得到该负数的四进制)
    				str1=text_field[3].getText();
    				for(int i=0;i<str1.length();i=i+2){
    					str2=str1.substring(i,i+2);
    					str3=str3+(Integer.parseInt(str2.substring(0,1))*2+
    							Integer.parseInt(str2.substring(1,2)));
    				}
    				text_field[5].setText(str3);
    				//正数四进制
    				if((""+Tools.getQuanteranry(temp)).length()<=16){
    					len=16-(""+Tools.getQuanteranry(temp)).length();
    					for(int i=0;i<len-1;i++){
    						str4=str4+"0";
    					}
    					text_field[4].setText(str4+Tools.getQuanteranry(temp));
    					str4="";
    				}
    				else{
    					return;
    				}
    				//正数八进制
    				if(Integer.toOctalString(temp).length()<=12){
    					len=12-Integer.toOctalString(temp).length();
    					for(int i=0;i<len-1;i++){
    						str4=str4+"0";
    					}
    					text_field[6].setText(str4+Integer.toOctalString(temp));
    					str4="";
    				}
    				else{
    					return;
    				}
    				//相反数八进制
    				text_field[7].setText(Integer.toOctalString(-temp));
    				//正数十六进制
    				if(Integer.toHexString(temp).length()<=8){
    					len=8-Integer.toHexString(temp).length();
    					for(int i=0;i<len-1;i++){
    						str4=str4+"0";
    					}
    					text_field[8].setText(str4+Integer.toHexString(temp));
    					str4="";
    				}
    				else{
    					return;
    				}
    				//相反数十六进制
    				text_field[9].setText(Integer.toHexString(-temp));
    			}
    		});
    	}
    	
    	public static void main(String args[]){
    		new SystemSwitch().init();
    	}
    }
    

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  • 原文地址:https://www.cnblogs.com/zfyouxi/p/5184173.html
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