关于string转byte[]的问题

[gamebus]

String estr="test";
byte[] temp=estr.getBytes();
String temp2=new String(temp);
System.out.println(temp+" : "+temp2.getBytes());

为什么会不相等啊

[希偌]

你得到的是temp和temp2的地址，当然不相同啦

[gamebus]

加密解密时，如果我将加密的明文转成String,在由String转成byte，就会有时出错有时正确，
出错javax.crypto.BadPaddingException: Given final block not properly padded
at com.sun.crypto.provider.DESCipher.engineDoFinal(DashoA6275)
at com.sun.crypto.provider.DESCipher.engineDoFinal(DashoA6275)
at javax.crypto.Cipher.doFinal(DashoA6275)
而byte[] clearByte=c1.doFinal(crypteByte); 里crypteByte替换成直接加密后的
cipherByte就没出现这个错误

public static void main(String args[])
{
try
{
String estr="test";
test tt=new test();
tt.run();
}
catch(Exception e){
e.printStackTrace();
}
}
public void run() {
//添加新安全算法,如果用JCE就要把它添加进去
Security.addProvider(new com.sun.crypto.provider.SunJCE());
String Algorithm="DES"; //定义 加密算法,可用 DES,DESede,Blowfish
String myinfo="你好";
try {
//生成密钥
KeyGenerator keygen = KeyGenerator.getInstance(Algorithm);
SecretKey deskey = keygen.generateKey();
System.out.println(deskey);
//加密

System.out.println("加密前的信息:"+myinfo);
Cipher c1 = Cipher.getInstance(Algorithm);
c1.init(Cipher.ENCRYPT_MODE,deskey);
byte[] cipherByte=c1.doFinal(myinfo.getBytes());
String estr=new String(cipherByte);
System.out.println("加密后的串:"+estr);
//解密
byte[] crypteByte=estr.getBytes();
System.out.println("解密后的串:"+new String(crypteByte));
c1 = Cipher.getInstance(Algorithm);
c1.init(Cipher.DECRYPT_MODE,deskey);
byte[] clearByte=c1.doFinal(crypteByte);

System.out.println("解密后的信息:"+(new String(clearByte)));

}
catch (java.security.NoSuchAlgorithmException e1) {e1.printStackTrace();}
catch (javax.crypto.NoSuchPaddingException e2) {e2.printStackTrace();}
catch (java.lang.Exception e3) {e3.printStackTrace();}
}