PROBLEMA COM O NullPointerException

[andremarim]

Olá a todos. Estou fazendo um programa mas quando eu rodo ele aparece o seguinte conjunto de erros:

	at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
	at java.awt.Component.processMouseEvent(Unknown Source)
	at javax.swing.JComponent.processMouseEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)
java.lang.NullPointerException
	at conversao.convertfloat(conversao.java:214)
	at telaframe2$3.actionPerformed(telaframe2.java:263)
	

o código do programa esta abaixo (sao duas classes)

import java.io.DataOutputStream;
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.ObjectOutputStream;
import java.io.OutputStream;

//import javax.xml.crypto.Data;
import javax.swing.JDesktopPane;
import javax.swing.JButton;
import java.awt.Rectangle;
import javax.swing.JPasswordField;
import java.awt.Dimension;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JTextField;
import javax.swing.JOptionPane;
import java.awt.*;
import java.lang.Object;
import java.lang.NullPointerException;

public class conversao {
	String [][] endereco;
	OutputStream [] saindo;
	int E = 0;
 	
	
	public String[][] enderecando(String O)
	{
		endereco = new String[122][6];
		String nome = ""; 
		for (int i = 1; i < 123 ;i++)
		{
			if (i < 10)
			{
				for (int j = 0; j < 6; j++)
				{
					String importante = "";
					switch (j)
					{
					case 0: 
						{
							importante = "FX";
							break;
						}
					case 1: 
						{
							importante = "FY";
							break;
						}
					case 2:
						{
							importante = "FZ";
							break;
						}
					case 3:
						{
							importante = "MX";
							break;
						}
					case 4: 
						{
							importante = "MY";
							break;
						}
					case 5: 
						{
							importante = "MZ";
							break;
						}
					}
					nome = "Riser30_e00"+i+"_" + importante +".dac" ;
					endereco[i-1][j] = O + nome;
				}
			}
			if (i > 9 & i < 100)
			{
				for (int j = 0; j < 6; j++)
				{
					String importante = "";
					switch (j)
					{
					case 0: 
						{
							importante = "FX";
							break;
						}
					case 1: 
						{
							importante = "FY";
							break;
						}
					case 2:
						{
							importante = "FZ";
							break;
						}
					case 3:
						{
							importante = "MX";
							break;
						}
					case 4: 
						{
							importante = "MY";
							break;
						}
					case 5: 
						{
							importante = "MZ";
							break;
						}
					}
					nome = "Riser30_e0"+i+"_" + importante + ".dac" ;
					endereco[i-1][j] = O + nome;
				}
				
			}
			if (i > 99)
			{
				for (int j = 0; j < 6; j++)
				{
					String importante = "";
					switch (j)
					{
					case 0: 
						{
							importante = "FX";
							break;
						}
					case 1: 
						{
							importante = "FY";
							break;
						}
					case 2:
						{
							importante = "FZ";
							break;
						}
					case 3:
						{
							importante = "MX";
							break;
						}
					case 4: 
						{
							importante = "MY";
							break;
						}
					case 5: 
						{
							importante = "MZ";
							break;
						}
					}
					nome = "Riser30_e"+i+"_" + importante + ".dac" ;
					endereco[i-1][j] = O + nome;
				}
			}
			
		}
		return endereco;
	}

	public void criaarquivosaida (String L) 
	{
		saindo = new OutputStream[732];
		
			try {
				File filesaida = new File(L);
				saindo[E] = new FileOutputStream(filesaida);
			//	saindo[0].write(floatToArrayByte(3599));
			} catch (FileNotFoundException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (IOException g) {
				// TODO Auto-generated catch block
				g.printStackTrace();
			} 
			E++;
	}
	
	public void convertfloat (float dadofloat)
	{
	
		for (int E = 0; E < 732 ; E++)
		{
			try {
				saindo[0].write(floatToArrayByte(3599));
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();}
			  catch (NullPointerException h){
				//TODO Auto-generated catch block
				h.printStackTrace();
			}
		}		
	}

	public void convertint (int dadoint)
	{
		try {
			File file = new File(endereco[0][0]);
			OutputStream output = new FileOutputStream(file);

			byte[] floatValue = floatToArrayByte(3599);

			//output.write(intToArrayByte(32000));
			output.write(intToArrayByte(3599));
			//output.write(charToByte(dadoChar));
			output.write(floatToArrayByte(3599));

		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	
	public void convertchar (char dadochar)
	{
		
	}
	
	static float byteArraytoFloat(byte[] aBytes)

	// OUTPUT: equivalent float value

	{
		int tempbits = ((0xff & aBytes[0]) | ((0xff & aBytes[1]) << 8)
				| ((0xff & aBytes[2]) << 16) | ((0xff & aBytes[3]) << 24));

		float ff = Float.intBitsToFloat(tempbits);

		return ff;
	}

	static byte[] floatToArrayByte(float value)

	// OUTPUT: equivalent float value

	{
		int tempbits = Float.floatToIntBits(value);

		byte[] bytes = new byte[4];
		int i;

		for (i = 0; i < 4; i++) {
			bytes[3 - i] = (byte) ((tempbits >>> ((4 - i - 1) * 8)) & 0xFF);
		}

		return bytes;
	}

	static byte[] intToArrayByte(int value)

	// OUTPUT: equivalent float value

	{
		byte[] bytes = new byte[2];
		int i;

		for (i = 0; i < 2; i++) {
			bytes[1 - i] = (byte) ((value >>> ((2 - i - 1) * 8)) & 0xFF);
		}

		return bytes;
	}

	static int byteArraytoInt(byte[] aBytes)

	{
		int tempbits;

		if (aBytes[1] < 0) {
			tempbits = ((0xff & aBytes[0]) | ((0xff & aBytes[1]) << 8)
					| (0xff << 16) | (0xff << 24));
		} else {
			tempbits = ((0xff & aBytes[0]) | ((0xff & aBytes[1]) << 8));
		}

		return tempbits;
	}

	static char bytetoChar(byte ascii)

	{
		return (char) ascii;
	}

	static byte charToByte(char unicode)

	{
		return (byte) unicode;
	}
}

e a outra classe

import javax.swing.JDesktopPane;
import javax.swing.JButton;
import java.awt.Rectangle;
import javax.swing.JPasswordField;
import java.awt.Dimension;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JTextField;
import javax.swing.JOptionPane;
import java.awt.*;
import java.lang.Object;
import java.lang.NullPointerException;


public class telaframe2 extends JDesktopPane {
	
	String [] U;
	String V;

	private static final long serialVersionUID = 1L;
	private JButton jButton = null;
	private JLabel jLabel = null;
	private JTextField jTextField = null;
	private JButton jButton1 = null;
	private JTextField jTextField1 = null;
	private JLabel jLabel1 = null;
	private JLabel jLabel11 = null;
	private JLabel jLabel111 = null;
	private JLabel jLabel112 = null;
	private JLabel jLabel113 = null;
	private JTextField jTextField11 = null;
	private JLabel jLabel114 = null;
	private JTextField jTextField111 = null;
	private JTextField jTextField1111 = null;
	private JTextField jTextField2 = null;
	private JTextField jTextField3 = null;
	private JTextField jTextField4 = null;
	private JLabel jLabel2 = null;
	private JLabel jLabel3 = null;
	private JButton jButton11 = null;
	private JButton jButton111 = null;
	/**
	 * This method initializes jButton	
	 * 	
	 * @return javax.swing.JButton	
	 */
	private JButton getJButton() {
		if (jButton == null) {
			jButton = new JButton();
			jButton.setBounds(new Rectangle(360, 90, 77, 31));
			jButton.setText("Abrir");
			jButton.addActionListener(new java.awt.event.ActionListener() {
				public void actionPerformed(java.awt.event.ActionEvent e) {
					Open abrir = new Open();
					//abrir.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
					String k = abrir.analyzePath();
					jTextField.setText(k);
					k = k + "\\";
					String [] H;
					H = new String[122];
					H = abrir.analyzePath2(k);
					//String [] U;
					U = new String[122];
					for (int i = 0; i<122; i++)
					{
						U[i] = k + H[i];
						U[i] = U[i].replaceAll("\\\\", "\\\\\\\\");
						//System.out.printf("%s \n", U[i]);
					}
					}
			});
		}
		return jButton;
	}

	/**
	 * This method initializes jTextField	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getJTextField() {
		if (jTextField == null) {
			jTextField = new JTextField();
			jTextField.setBounds(new Rectangle(106, 90, 240, 20));
		}
		return jTextField;
	}

	/**
	 * This method initializes jButton1	
	 * 	
	 * @return javax.swing.JButton	
	 */
	private JButton getJButton1() {
		if (jButton1 == null) {
			jButton1 = new JButton();
			jButton1.setBounds(new Rectangle(360, 210, 77, 31));
			jButton1.addActionListener(new java.awt.event.ActionListener() {
				public void actionPerformed(java.awt.event.ActionEvent e) {
					Open abrir = new Open();
					//abrir.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
					String k = abrir.analyzePath();
					jTextField1.setText(k);
					V = k + "\\";
					//String [] H;
					//H = new String[732];
					//H = abrir.analyzePath2(k);
					//V = new String[122];
					//for (int i = 0; i<122; i++)
					//{
						//V[i] = k + H[i];
						V = V.replaceAll("\\\\", "\\\\\\\\");
						//System.out.printf("%s", V);
					//}
				}
			});
			jButton1.setText("Abrir");
		}
		return jButton1;
	}

	/**
	 * This method initializes jTextField1	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getJTextField1() {
		if (jTextField1 == null) {
			jTextField1 = new JTextField();
			jTextField1.setBounds(new Rectangle(106, 210, 240, 20));
		}
		return jTextField1;
	}

	/**
	 * This method initializes jTextField11	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getJTextField11() {
		if (jTextField11 == null) {
			jTextField11 = new JTextField();
			jTextField11.setBounds(new Rectangle(60, 315, 94, 20));
			jTextField11.setText("");
		
		}
		return jTextField11;
	}

	/**
	 * This method initializes jTextField111	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getJTextField111() {
		if (jTextField111 == null) {
			jTextField111 = new JTextField();
			jTextField111.setBounds(new Rectangle(60, 345, 94, 20));
		}
		return jTextField111;
	}

	/**
	 * This method initializes jTextField1111	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getJTextField1111() {
		if (jTextField1111 == null) {
			jTextField1111 = new JTextField();
			jTextField1111.setBounds(new Rectangle(60, 375, 94, 20));
		}
		return jTextField1111;
	}

	/**
	 * This method initializes jTextField2	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getJTextField2() {
		if (jTextField2 == null) {
			jTextField2 = new JTextField();
			jTextField2.setBounds(new Rectangle(60, 405, 94, 20));
		}
		return jTextField2;
	}

	/**
	 * This method initializes jTextField3	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getJTextField3() {
		if (jTextField3 == null) {
			jTextField3 = new JTextField();
			jTextField3.setBounds(new Rectangle(60, 435, 94, 20));
		}
		return jTextField3;
	}

	/**
	 * This method initializes jTextField4	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getJTextField4() {
		if (jTextField4 == null) {
			jTextField4 = new JTextField();
			jTextField4.setBounds(new Rectangle(60, 465, 94, 20));
		}
		return jTextField4;
	}

	/**
	 * This method initializes jButton11	
	 * 	
	 * @return javax.swing.JButton	
	 */
	private JButton getJButton11() {
		if (jButton11 == null) {
			jButton11 = new JButton();
			jButton11.setBounds(new Rectangle(296, 456, 91, 26));
			jButton11.addActionListener(new java.awt.event.ActionListener() {
				public void actionPerformed(java.awt.event.ActionEvent e) {
					String vetorfx = jTextField11.getText();
					double menosfx = Double.parseDouble(vetorfx);
					String vetorfy = jTextField111.getText();
					double menosfy = Double.parseDouble(vetorfy);
					String vetorfz = jTextField1111.getText();
					double menosfz = Double.parseDouble(vetorfz);
					String vetormx = jTextField2.getText();
					double menosmx = Double.parseDouble(vetormx);
					String vetormy = jTextField3.getText();
					double menosmy = Double.parseDouble(vetormy);
					String vetormz = jTextField4.getText();
					double menosmz = Double.parseDouble(vetormz);
				//	System.out.printf("teste %s\n%f\n%f\n%f\n%f\n%f",menosfx,
				//			menosfy,menosfz,menosmx,menosmy,menosmz);
					
					abrindo comeco = new abrindo();
					conversao primeiro = new conversao();
					String [][] endereco1;
					endereco1 = new String[122][6];
					                           
					endereco1 = primeiro.enderecando(V);
					int p = 0;
					for (int i = 0; i < 122 ; i++)
					{
						for (int j = 0 ; j <6 ; j++)
						{
							primeiro.criaarquivosaida(endereco1[i][j]);
						}	
					}
					
					primeiro.convertfloat(3599);
//					primeiro.convertfloat(1);
//					primeiro.convertfloat(0);
//					primeiro.convertfloat(1);
			
					
					
					
//					for (int linha = 0; linha < 122 ; linha++)
//					{
//						for (int coluna = 0; coluna < 6 ; coluna++)
//						{
						//    primeiro.enderecando(V);
						//	primeiro.convertfloat(3599);
//						}
//					}
					
			//	    for (int i = 0; i < 122; i++)
			//	    {
			//		   	comeco.openFile(U[i],i);
					//   	comeco.readRecords();
        	//	    }
			    				   
			//	    primeiro.enderecando(V);
					
					
				//	primeiro.convertfloat(5);
					
					
				}
			});
			jButton11.setText("Converter");
		}
		return jButton11;
	}

	/**
	 * This method initializes jButton111	
	 * 	
	 * @return javax.swing.JButton	
	 */
	private JButton getJButton111() {
		if (jButton111 == null) {
			jButton111 = new JButton();
			jButton111.setBounds(new Rectangle(413, 456, 91, 26));
			jButton111.addActionListener(new java.awt.event.ActionListener() {
				public void actionPerformed(java.awt.event.ActionEvent e) {
					jTextField11.setText(""); 
					jTextField111.setText(""); 
					jTextField1111.setText(""); 
					jTextField2.setText(""); 
					jTextField3.setText(""); 
					jTextField4.setText(""); 
					jTextField.setText(""); 
					jTextField1.setText(""); 

				}
			});
			jButton111.setText("Limpar");
		}
		return jButton111;
	}

	/**
	 * @param args
	 */
	public void main(String[] args) {
		// TODO Auto-generated method stub
	
		
		
	
		
		
	}

	/**
	 * This is the default constructor
	 */
	public telaframe2() {
		super();
		initialize();
	}

	/**
	 * This method initializes this
	 * 
	 * @return void
	 */
	private void initialize() {
		jLabel3 = new JLabel();
		jLabel3.setBounds(new Rectangle(37, 465, 17, 16));
		jLabel3.setText("Mz");
		jLabel2 = new JLabel();
		jLabel2.setBounds(new Rectangle(37, 435, 17, 16));
		jLabel2.setText("My");
		jLabel114 = new JLabel();
		jLabel114.setBounds(new Rectangle(53, 289, 189, 16));
		jLabel114.setText("Valores de Entrada");
		jLabel113 = new JLabel();
		jLabel113.setBounds(new Rectangle(37, 405, 17, 16));
		jLabel113.setText("Mx");
		jLabel112 = new JLabel();
		jLabel112.setBounds(new Rectangle(37, 375, 13, 16));
		jLabel112.setText("Fz");
		jLabel111 = new JLabel();
		jLabel111.setBounds(new Rectangle(37, 345, 13, 16));
		jLabel111.setText("Fy");
		jLabel11 = new JLabel();
		jLabel11.setBounds(new Rectangle(37, 315, 13, 16));
		jLabel11.setText("Fx");
		jLabel1 = new JLabel();
		jLabel1.setBounds(new Rectangle(174, 233, 113, 16));
		jLabel1.setText("Diretório de Saída");
		jLabel = new JLabel();
		jLabel.setBounds(new Rectangle(174, 113, 113, 16));
		jLabel.setText("Diretório de Entrada");
		this.setSize(534, 531);
	

		this.add(getJButton(), null);
		this.add(jLabel, null);
		this.add(getJTextField(), null);
		this.add(getJButton1(), null);
		this.add(getJTextField1(), null);
		this.add(jLabel1, null);
		this.add(jLabel11, null);
		this.add(jLabel111, null);
		this.add(jLabel112, null);
		this.add(jLabel113, null);
		this.add(getJTextField11(), null);
		this.add(jLabel114, null);
		this.add(getJTextField111(), null);
		this.add(getJTextField1111(), null);
		this.add(getJTextField2(), null);
		this.add(getJTextField3(), null);
		this.add(getJTextField4(), null);
		this.add(jLabel2, null);
		this.add(jLabel3, null);
		this.add(getJButton11(), null);
		this.add(getJButton111(), null);
	}

}  //  @jve:decl-index=0:visual-constraint="30,21"

por favor, se alguem souber o que tem de errado, da uma força pra mim.

Valew

[cassio]

sei la o que esse seu código faz, mas aqui

saindo[0].write(floatToArrayByte(3599));

O elemento que está nesse índice 0 desse seu vetor é nulo, logo vc não pode chamar nenhum método sobre ele que vai dar NullPointerException mesmo…

Como esse trecho está dentro de um loop for, o índice do vetor não deveria estar sendo referenciado pelo contador do loop E?

for (int E = 0; E &lt 732 ; E++)
 		{
 			try {
 				saindo[E].write(floatToArrayByte(3599));
 			} catch (IOException e) {
 				// TODO Auto-generated catch block
 				e.printStackTrace();}
 			  catch (NullPointerException h){
 				//TODO Auto-generated catch block
 				h.printStackTrace();
 			}
 		}	

[andremarim]

Na verdade é de fato

saindo[E] ...

Porém ainda assim continua dando os mesmo erros. no método criaarquivosaida eu crio todas as variaveis de saindo[E], e nao to entendendo porque ele pode reclamar que elas sao nulas!

[cassio]

pode ser tbm algo no método floatToArrayByte()