public static void main(String[] args) {
// TODO Auto-generated method stub
String sourceStr1 = "啊啊啊啊";
String sourceStr2 = "哦哦哦哦哦哦哦哦哦哦";
byte[] sourceByte1 = sourceStr1.getBytes();
byte[] sourceByte2 = sourceStr2.getBytes();
byte[] target = new byte[sourceByte1.length+sourceByte2.length];
System.out.println(new String(sourceByte1));
System.out.println(new String(sourceByte2));
int len = sourceByte1.length + sourceByte2.length;
System.arraycopy(sourceByte1, 0, target, 0, sourceByte1.length);
System.arraycopy(sourceByte2, 0, target, sourceByte1.length, sourceByte2.length);
System.out.println(new String(target));
//这里打印:啊啊啊啊哦哦哦哦哦哦哦哦哦哦
}
// TODO Auto-generated method stub
String sourceStr1 = "啊啊啊啊";
String sourceStr2 = "哦哦哦哦哦哦哦哦哦哦";
byte[] sourceByte1 = sourceStr1.getBytes();
byte[] sourceByte2 = sourceStr2.getBytes();
byte[] target = new byte[sourceByte1.length+sourceByte2.length];
System.out.println(new String(sourceByte1));
System.out.println(new String(sourceByte2));
int len = sourceByte1.length + sourceByte2.length;
System.arraycopy(sourceByte1, 0, target, 0, sourceByte1.length);
System.arraycopy(sourceByte2, 0, target, sourceByte1.length, sourceByte2.length);
System.out.println(new String(target));
//这里打印:啊啊啊啊哦哦哦哦哦哦哦哦哦哦
}
这里主要用到了System.arraycopy方法。
System.arraycopy(src, srcPos, dest, destPos, length)
src : 源数组
srcPos:源数组中的需要复制的起始位置
dest:目标数组
desPos:目标数组中需要复制到的起始位置
length:需要复制源数组的长度