Java学习笔记——String类型转换

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上代码：

 package cn.stringtoobj;
 
 public class TypeConversion {
 
     public static void main(String[] args) {
         //将String转int
         String str = "";
         int[] ints = new int[];
         ints[] = Integer.parseInt(str);
         ints[] = Integer.valueOf(str);
         ints[] = new Integer(str);
         print(ints);
         //String转byte
         byte[] bytes = new byte[];
         bytes[] = Byte.parseByte(str);
         bytes[] = Byte.valueOf(str);
         bytes[] = new Byte(str);
         print(bytes);
         //String转short
         short[] shorts = new short[];
         shorts[] = Short.parseShort(str);
         shorts[] = Short.valueOf(str);
         shorts[] = new Short(str);
         print(shorts);
         //String转long
         long[] longs = new long[];
         longs[] = Long.parseLong(str);
         longs[] = Long.valueOf(str);
         longs[] = new Long(str);
         print(longs);
         //String转double
         double[] doubles = new double[];
         doubles[] = Double.parseDouble(str);
         doubles[] = Double.valueOf(str);
         doubles[] = new Double(str);
         print(doubles);
         //String转float
         float[] floats = new float[];
         floats[] = Float.parseFloat(str);
         floats[] = Float.valueOf(str);
         floats[] = new Float(str);
         print(floats);
         //String转boolean
         str = "true";
         boolean[] booleans = new boolean[];
         booleans[] = Boolean.parseBoolean(str);
         booleans[] = Boolean.valueOf(str);
         booleans[] = new Boolean(str);
         print(booleans);
         //String转byte[]
         byte[] bytes2 = str.getBytes();
         print(bytes2);
         //String转char[]
         char[] dstchars =new char[str.length()];
         str.getChars(, str.length(), dstchars, );
         print(dstchars);
         //Object转String
         Object[] obj = new Object[];
         str = String.valueOf(obj);
         System.out.println(str);
         str = String.valueOf(dstchars);
         System.out.println(str);
     }
     private static void print(char[] dstchars) {
         for (char i : dstchars) {
             System.out.print(i +" ");
         }
         System.out.println();
     }
     private static void print(boolean[] booleans) {
         for (boolean i : booleans) {
             System.out.print(i +" ");
         }
         System.out.println();
     }
     private static void print(float[] floats) {
         for (float i : floats) {
             System.out.print(i +" ");
         }
         System.out.println();
     }
     private static void print(double[] doubles) {
         for (double i : doubles) {
             System.out.print(i +" ");
         }
         System.out.println();
     }
     private static void print(long[] longs) {
         for (long i : longs) {
             System.out.print(i +" ");
         }
         System.out.println();
     }
     private static void print(short[] shorts) {
         for (short i : shorts) {
             System.out.print(i +" ");
         }
         System.out.println();
     }
     private static void print(int[]ints){
         for (int i : ints) {
             System.out.print(i +" ");
         }
         System.out.println();
     }
     private static void print(byte[]bytes){
         for (byte i : bytes) {
             System.out.print(i +" ");
         }
         System.out.println();
     }
 }