arrays - Why does variable only increment once in Java code? -

i making game player ('p') starts on 2d array of dashes @ [0][0]. player prompted enter size of array, , enter action (left, right, up, down, or exit). when action entered, 'p' supposed move 1 index. working on movedown method , nothing else yet. when type "down", increment theworld[1][0], not increment again (theworld[2][0]) if type "down". stays @ [1][0].

there 2 classes program, thing other class has right main method , world.userinput method, won't include that. work in progress, excuse sloppy code, space, etc. here have far:

    import java.util.scanner;  class world {  private int characterrow; private int charactercolumn; private char[][] theworld;  char player = 'p'; int playerx = 0; int playery = 0; string useraction; boolean keepplaying = true; boolean outofbounds;  public world() {      characterrow = 0;     charactercolumn = 0;   } public world(int height, int width) {      this.characterrow = height;     this.charactercolumn = width;  }  public void setheight(int height) {      characterrow = height;  } public void setwidth(int width) {      charactercolumn = width;  } public void userinput(int height, int width, int x, int y) {     scanner input = new scanner(system.in);       system.out.print("enter world width: ");     width = input.nextint();     system.out.print("enter world height: ");     height = input.nextint();      displayworld(height, width, x, y);      input.nextline();      while(keepplaying)     {     system.out.print("action > ");     string action = input.nextline();      while(!action.equalsignorecase("exit"))     {         keepplaying = true;         if(action.equalsignorecase("down") && x > theworld.length)         {           outofbounds = true;           system.out.println("you cannot go out of bounds. try again.");         }         else         break;     }      if(action.equalsignorecase("down"))     {         movedown(height, width, x, y, action);      } }  public void movedown(int height, int width, int x, int y, string action) {        if(x < theworld.length-1)       {       x += 1;     }       displayworld(height, width, x, y);   }      public void displayworld(int height, int width, int x, int y) {     theworld = new char[height][width];     for(height = 0; height < theworld.length; height++)     {         for(width = 0; width < theworld[height].length; width++)         {              theworld[height][width] = '-';             theworld[x][y] = player;               system.out.print(theworld[height][width] + " ");         }         system.out.println();     }    }//end displayworld }//end class 

i added setplayerx method, , changed assignment in movedown see here. works now, figured out.

   public void setplayerx(int x) {     x = 1;     playerx = x; }     public void movedown(int height, int width, int x, int y) {     x++;     playerx = playerx + x;     displayworld(height, width, x, y);  }