import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Scanner;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;


public class MenuTest {
    private String sourceFilePath;
    private String targetFilePath;
    
    public String getSourceFilePath() {
        return sourceFilePath;
    }

    public void setSourceFilePath(String sourceFilePath) {
        this.sourceFilePath = sourceFilePath;
    }
    
    public String getTargetFilePath() {
        return targetFilePath;
    }

    public void setTargetFilePath(String targetFilePath) {
        this.targetFilePath = targetFilePath;
    }
    
    public String getFilePath(String message) {
        String filePath;
        
        System.out.println(message);
        Scanner scanner = new Scanner(System.in);
        filePath = scanner.next();
        filePath.replace("\\", File.separator);
        return filePath;
    }
    
    public void fileCopy () throws IOException{
        String message = "Please input source file path:";
        this.setSourceFilePath(getFilePath(message));
        message = "Please input target file path:";
        this.setTargetFilePath(getFilePath(message));
        
        File sourceFile = new File(getSourceFilePath());
        File targetFile = new File(getTargetFilePath());
        if (!sourceFile.exists()) {
            System.out.println("souce file not exists.");
            System.exit(1);
        }
        InputStream input = new FileInputStream(sourceFile);
        OutputStream output = new FileOutputStream(targetFile);
        if((input!=null)&&(output!=null)){
            int temp=0;
            while((temp=input.read())!=(-1)){
                output.write(temp);
            }
        }
        input.close();
        output.close();
    }
    
    public void zipDecompress() throws IOException {
        String message = "Please input source file path:";
        this.setSourceFilePath(getFilePath(message));
        message = "Please input target file path:";
        this.setTargetFilePath(getFilePath(message));
        
        File souceFile = new File(getSourceFilePath());
        File outFile = null;
        ZipFile zipFile = new ZipFile(souceFile);
        ZipInputStream zipInput = new ZipInputStream(new FileInputStream(
                souceFile));
        ZipEntry entry = null;
        InputStream input = null;
        OutputStream output = null;
        while ( (entry = zipInput.getNextEntry()) != null) {
            System.out.println("解压缩" + entry.getName() + "文件");
            outFile = new File(getTargetFilePath());
            if(!outFile.getParentFile().exists()){
                outFile.getParentFile().mkdir();
            }
            if(!outFile.exists()){
                outFile.createNewFile();
            }
            input = zipFile.getInputStream(entry);
            output = new FileOutputStream(outFile);
            int temp = 0;
            while((temp = input.read()) != -1){
                output.write(temp);
            }
            input.close();
            output.close();
        }
    }
    
    public void zipCompress() throws IOException {
        String message = "Please input source file path:";
        this.setSourceFilePath(getFilePath(message));
        message = "Please input target file path:";
        this.setTargetFilePath(getFilePath(message));
        
        File sourceFile = new File(getSourceFilePath());
        File zipFile = new File(getTargetFilePath());
        InputStream input = new FileInputStream(sourceFile);
        ZipOutputStream zipOut = new ZipOutputStream(new FileOutputStream(
                zipFile));
        zipOut.putNextEntry(new ZipEntry(sourceFile.getName()));
        int temp = 0;
        while((temp = input.read()) != -1){
            zipOut.write(temp);
        }
        input.close();
        zipOut.close();
    }
    
    public static void main(String[] args) {
        MenuTest menuTest = new MenuTest();
        Integer menu = 0;
        System.out.println("Please input a number to select a menu:");
        System.out.println("1.Copy File    2.Comress File    3.Decomress File    4.quit");
        Scanner scanner = new Scanner(System.in);
        menu = scanner.nextInt();
        try {
            switch (menu) {
            case 1:
                menuTest.fileCopy();
                break;
            case 2:
                menuTest.zipCompress();
                break;
            case 3:
                menuTest.zipDecompress();
                break;
            default :
                System.exit(0);
            }
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        
    }
}

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java io 文件管理