用System.arraycopy吧arraycopy
public static void arraycopy(Object src,
int srcPos,
Object dest,
int destPos,
int length)
Copies an array from the specified source array, beginning at the specified position, to the specified position of the destination array. A subsequence of array components are copied from the source array referenced by src to the destination array referenced by dest. The number of components copied is equal to the length argument. The components at positions srcPos through srcPos闩1 in the source array are copied into positions destPos through destPos闩1, respectively, of the destination array.
If the src and dest arguments refer to the same array object, then the copying is performed as if the components at positions srcPos through srcPos闩1 were first copied to a temporary array with length components and then the contents of the temporary array were copied into positions destPos through destPos闩1 of the destination array. If dest is null, then a NullPointerException is thrown. If src is null, then a NullPointerException is thrown and the destination array is not modified. Otherwise, if any of the following is true, an ArrayStoreException is thrown and the destination is not modified: The src argument refers to an object that is not an array.
The dest argument refers to an object that is not an array.
The src argument and dest argument refer to arrays whose component types are different primitive types.
The src argument refers to an array with a primitive component type and the dest argument refers to an array with a reference component type.
The src argument refers to an array with a reference component type and the dest argument refers to an array with a primitive component type.
Otherwise, if any of the following is true, an IndexOutOfBoundsException is thrown and the destination is not modified: The srcPos argument is negative.
The destPos argument is negative.
The length argument is negative.
srcPos闩 is greater than src.length, the length of the source array.
destPos闩 is greater than dest.length, the length of the destination array.
Otherwise, if any actual component of the source array from position srcPos through srcPos闩1 cannot be converted to the component type of the destination array by assignment conversion, an ArrayStoreException is thrown. In this case, let k be the smallest nonnegative integer less than length such that src[srcPosk] cannot be converted to the component type of the destination array; when the exception is thrown, source array components from positions srcPos through srcPosk-1 will already have been copied to destination array positions destPos through destPosk-1 and no other positions of the destination array will have been modified. (Because of the restrictions already itemized, this paragraph effectively applies only to the situation where both arrays have component types that are reference types.)
Parameters:
src - the source array.
srcPos - starting position in the source array.
dest - the destination array.
destPos - starting position in the destination data.
length - the number of array elements to be copied.
Throws:
IndexOutOfBoundsException - if copying would cause access of data outside array bounds.
ArrayStoreException - if an element in the src array could not be stored into the dest array because of a type mismatch.
NullPointerException - if either src or dest is null.
public static void arraycopy(Object src,
int srcPos,
Object dest,
int destPos,
int length)
Copies an array from the specified source array, beginning at the specified position, to the specified position of the destination array. A subsequence of array components are copied from the source array referenced by src to the destination array referenced by dest. The number of components copied is equal to the length argument. The components at positions srcPos through srcPos闩1 in the source array are copied into positions destPos through destPos闩1, respectively, of the destination array.
If the src and dest arguments refer to the same array object, then the copying is performed as if the components at positions srcPos through srcPos闩1 were first copied to a temporary array with length components and then the contents of the temporary array were copied into positions destPos through destPos闩1 of the destination array. If dest is null, then a NullPointerException is thrown. If src is null, then a NullPointerException is thrown and the destination array is not modified. Otherwise, if any of the following is true, an ArrayStoreException is thrown and the destination is not modified: The src argument refers to an object that is not an array.
The dest argument refers to an object that is not an array.
The src argument and dest argument refer to arrays whose component types are different primitive types.
The src argument refers to an array with a primitive component type and the dest argument refers to an array with a reference component type.
The src argument refers to an array with a reference component type and the dest argument refers to an array with a primitive component type.
Otherwise, if any of the following is true, an IndexOutOfBoundsException is thrown and the destination is not modified: The srcPos argument is negative.
The destPos argument is negative.
The length argument is negative.
srcPos闩 is greater than src.length, the length of the source array.
destPos闩 is greater than dest.length, the length of the destination array.
Otherwise, if any actual component of the source array from position srcPos through srcPos闩1 cannot be converted to the component type of the destination array by assignment conversion, an ArrayStoreException is thrown. In this case, let k be the smallest nonnegative integer less than length such that src[srcPosk] cannot be converted to the component type of the destination array; when the exception is thrown, source array components from positions srcPos through srcPosk-1 will already have been copied to destination array positions destPos through destPosk-1 and no other positions of the destination array will have been modified. (Because of the restrictions already itemized, this paragraph effectively applies only to the situation where both arrays have component types that are reference types.)
Parameters:
src - the source array.
srcPos - starting position in the source array.
dest - the destination array.
destPos - starting position in the destination data.
length - the number of array elements to be copied.
Throws:
IndexOutOfBoundsException - if copying would cause access of data outside array bounds.
ArrayStoreException - if an element in the src array could not be stored into the dest array because of a type mismatch.
NullPointerException - if either src or dest is null.
在C中我对mychar的改变将会反映到mychar1中。
而用arraycopy却是不行的！！
char mychar1[]=new char[42];
for (int i=8;i<=49;i++)
mycharl[i-8]=mychar[i];
能完成你的要求，但可能不是你想要的：）
你所说的方法都根本不能实现mychar1和mychar的同步更改！！！可悲！！！
没办法直接实现那样的功能,
但是这样的功能谁都可以在程序避免的,
所以没有必要拿C的这个功能在Java版中做死地吵,
而且开口一个高手闭口一个高手让人对你地印象很不好,
因为研究学问或者技术不应该是这样一个强调或者说是心态.