「java.lang.OutOfMemoryError：Java堆空間」在嘗試設置數組元素時發生

這是我用於Google的antai挑戰的一段代碼，只要我運行它似乎進入一些無限循環然後我在底部獲得堆棧跟蹤。我看着這段代碼已經被燒燬了，我不能爲我的生活弄清楚這一點。「java.lang.OutOfMemoryError：Java堆空間」在嘗試設置數組元素時發生

public class Node 
{ 
    private final int xCoord, yCoord; 
    private int F, G, H; 
    private Tile location; 
    Node previousNode; 
    private Tile [] neighbors; 

    /* 
    G 
    the exact cost to reach this node from the starting node. 
    H 
    the estimated(heuristic) cost to reach the destination from here. 
    F = G + H 
    As the algorithm runs the F value of a node tells us how expensive we think it will   be to reach our goal by way of that node. 
    */ 

    public Node(Tile loc) 
    { 
     location = loc; 
     xCoord = location.getCol(); 
     yCoord = location.getRow(); 
     F=G=H=0; 
     setNeighbors(); 
    } 

    private void setNeighbors() 
    { 
     if(neighbors == null) 
     { 
      neighbors = new Tile[4]; 
     } 
     neighbors[0] = new Tile(xCoord+1,yCoord); 
     neighbors[1] = new Tile(xCoord-1,yCoord); 
     neighbors[2] = new Tile(xCoord,yCoord+1); 
     neighbors[3] = new Tile(xCoord,yCoord-1);//error occurs here!!!!!! 
    } 
} 

     /** 
* Represents a tile of the game map. 
*/ 
public class Tile implements Comparable<Tile> { 
    private final int row; 

    private final int col; 

    /** 
    * Creates new {@link Tile} object. 
    * 
    * @param row row index 
    * @param col column index 
    */ 
    public Tile(int row, int col) { 
     this.row = row; 
     this.col = col; 
    } 

    /** 
    * Returns row index. 
    * 
    * @return row index 
    */ 
    public int getRow() { 
     return row; 
    } 

    /** 
    * Returns column index. 
    * 
    * @return column index 
    */ 
    public int getCol() { 
     return col; 
    } 

    /** 
    * {@inheritDoc} 
    */ 
    @Override 
    public int compareTo(Tile o) { 
     return hashCode() - o.hashCode(); 
    } 

    /** 
    * {@inheritDoc} 
    */ 
    @Override 
    public int hashCode() { 
     return row * Ants.MAX_MAP_SIZE + col; 
    } 

    /** 
    * {@inheritDoc} 
    */ 
    @Override 
    public boolean equals(Object o) { 
     boolean result = false; 
     if (o instanceof Tile) { 
      Tile tile = (Tile)o; 
      result = row == tile.row && col == tile.col; 
     } 
     return result; 
    } 

    /** 
    * {@inheritDoc} 
    */ 
    @Override 
    public String toString() { 
     return row + " " + col; 
    } 
    }

我收到實際的錯誤是：

Exception in thread "main" java.lang.OutOfMemoryError: Java heap space 
    at Node.setNeighbors(Node.java:37) 
    at Node.<init>(Node.java:25) 
    at AstarSearch.assessRoute(AstarSearch.java:73) 
    at MyBot.gatherFood(MyBot.java:153) 
    at MyBot.doTurn(MyBot.java:124) 
    at AbstractSystemInputParser.processLine(AbstractSystemInputParser.java:54) 
    at AbstractSystemInputReader.readSystemInput(AbstractSystemInputReader.java:18) 
    at MyBot.main(MyBot.java:25)

任何幫助表示讚賞

來源

2011-12-16 Bill.Caffery

您還沒有向我們展示您的Tile代碼 - 特別是構造函數。 – 2011-12-16 06:31:20

您是否嘗試過使用探查器並查看哪些對象在泄漏？ VishalVM隨JDK一起提供。 – 2011-12-16 06:36:45