私はプロジェクトのjarファイルを開くことができません

Question

私はjarファイルを持っている必要があるプロジェクトを持っていますが、開かないでください、誰でも私を助けてくれますか、私は大学にできるだけ早く必要です。

package huffmanproject; 

import java.util.ArrayList; 
import java.util.PriorityQueue; 

public class huffmanproject { 

    public static class HuffNode implements Comparable<HuffNode> { 

     public int value; 
     public int weight; 
     public HuffNode leftTree; 
     public HuffNode rightTree; 
     public HuffNode parent; 

     public HuffNode() { 
      parent = null; 
     } 

     public HuffNode(int v, int w, HuffNode lTree, HuffNode rTree, HuffNode par) { 
      value = v; 
      weight = w; 
      leftTree = lTree; 
      rightTree = rTree; 
      parent = par; 
     } 

     @Override 
     public int compareTo(HuffNode rhs) { 
      return weight - rhs.weight; 
     } 

     @Override 
     public String toString() { 
      String str = ""; 
      str += this.value; 
      return str; 
     } 
    } 

    public static class HuffTree { 

     private int size = 0; 
     private HuffNode root = new HuffNode(); 
     private PriorityQueue<HuffNode> huffQueue = new PriorityQueue(); 
     public ArrayList<String> pathTable = new ArrayList(); 
     public ArrayList<Character> valueTable = new ArrayList(); 

     public HuffTree(int[] freq, char[] code) { 

      this.size = freq.length; 

      if (freq.length != code.length) { 
      throw new UnsupportedOperationException("Error: Character and code length mismatch."); 
      } 

      for (int i = 0; i < this.size; i++) { 
       huffQueue.offer(new HuffNode(code[i], freq[i], null, null, null)); 
      } 
      createTree(); 
      createTable(this.root, ""); 
     } 

     private void createTree() { 
      while (huffQueue.size() > 1) { 
       HuffNode tempL = huffQueue.poll(); 
       HuffNode tempR = huffQueue.poll(); 
       HuffNode parent = new HuffNode(0, tempL.weight+tempR.weight, tempL, tempR, null); 
       tempL.parent = parent; 
       tempR.parent = parent; 
       huffQueue.offer(parent); 
       this.size++; 
      } 
      this.root = huffQueue.peek(); 
     } 
     private void createTable(HuffNode curr, String str) { 
      if (curr == null) return; 
      if (curr.leftTree == null && curr.rightTree == null) { 
       char tempChar; 
       if (curr.value == 32) 
        tempChar = ' '; 

       if (curr.value == 10) 
        tempChar = 'n'; 

       else 
        tempChar = (char)curr.value; 
       this.valueTable.add(tempChar); 
       this.pathTable.add(str); 
      } 
      str += "0"; 
      createTable(curr.leftTree, str); 
      str = str.substring(0, str.length()-1); 
      str += "1"; 
      createTable(curr.rightTree, str); 
     } 
     String tacks = ""; 
     public void getTree(HuffNode curr) { 
      if (curr == null) return; 
      if (curr.leftTree == null && curr.rightTree == null) { 
       switch (curr.value) { 
        case 32: 
         System.out.println(tacks + curr.weight + ": sp"); 
         break; 
        case 10: 
         System.out.println(tacks + curr.weight + ": nl"); 
         break; 
        default: 
         System.out.println(tacks + curr.weight + ": " + (char)curr.value); 
         break; 
       }    
      } 
      else 
       System.out.println(tacks + curr.weight); 
      tacks += "- "; 
      getTree(curr.leftTree); 
      getTree(curr.rightTree); 
      tacks = tacks.substring(0, tacks.length()-2); 
     } 
     public int getSize() { return this.size; } 
     public String encode(String input){ 
      String str = ""; 
      for (int x = 0; x < input.length(); x++) { 
       for (int i = 0; i < valueTable.size(); i++) { 
        if (valueTable.get(i) == input.charAt(x)) 
         str += pathTable.get(i); 
       } 
      } 
      return str; 
     } 
     public String decode(String bits) { 
      String decodedStr = ""; 
      for (int i = 0; i < bits.length(); i++) { 
       if (!getChar(bits.substring(0, i+1)).equals("")) { 
        decodedStr += getChar(bits.substring(0, i+1)); 
        bits = bits.substring(i+1); 
        i = 0; 
       } 
      } 
      return decodedStr; 
     } 
     private String getChar(String bits) { 
      String character = ""; 
       for (int i = 0; i < pathTable.size(); i++) { 
        if (pathTable.get(i).equals(bits)) 
         character = valueTable.get(i).toString(); 
       } 
      return character; 
     } 
    } 
     public static void main(String[] args) { 
      // for example assume that we have these letters with these different frequencies like below: 
      int freq[] = {10, 15, 12, 3, 4, 13, 1}; 
      char code[] = {'a', 'e', 'i', 's', 't', ' ', '\n'}; 
      HuffTree hTree = new HuffTree(freq, code); 
      System.out.println("Display Tree:"); 
      HuffNode curr = hTree.root; 
      hTree.getTree(curr); 
      System.out.println(""); 
      // and we want to build the huffman tree of the word sea : 
      System.out.println("Encode 'sea': " + hTree.encode("sea") +"\n"); 
      System.out.println("Decode '" + hTree.encode("sea") + "': " +           hTree.decode(hTree.encode("tea"))); 
     } 
} 

Answer 1

単純にjarファイルにコンパイルしていない場合は、コマンドプロンプトまたはターミナルで次のコマンドを試してみてください。オラクルから

jar cf jar-file input-file(s) 

：Creating jar File

コマンドプロンプトを開くには、入力して実行]ボックスにcmdと押しを開くにはWIN + Rを使用しています。

あなたのjavaファイルのディレクトリに移動します。

cd C:\Path\to\my\java\file\HuffNode.java 

は、コマンドを実行します。

jar cf HuffNode.jar HuffNode.java 

あなたが複数の.javaファイルがある場合：

jar cf HuffNode.jar File1.java File2.java File3.java