j02060406.java

经典java教材《java完美经典》一书中源码的完全收集

import java.lang.*;

class j02060406
{
  public static void main(String para[])
  {
		char[] chArr = {'C','o','l','o','r','F','i','s','h','^','_','^'};
		String getStr;
		getStr = String.copyValueOf(chArr);
		System.out.println("pr1 getStr = " + getStr);
		getStr = String.copyValueOf(chArr,5,7);
		System.out.println("pr2 getStr = " + getStr);
		
		String testStr;
		testStr = null; //要将 String 对象初始化才行
		getStr = testStr.copyValueOf(chArr,5,7);  //若无上行，此行会错误
		System.out.println("pr3 getStr = " + getStr);		
		//=================================================
		Float FloatObj = new Float(123.987);
		byte[] byteArr = "江义华".getBytes();			
		char[] charArr = {'林','小','拉'};
		getStr = String.valueOf(FloatObj);		
		getStr = getStr + "  " + String.valueOf(byteArr);	
		/*valueOf()的参数型式没有 byte[] 这种，故视 byteArr 为
		  一般对象，呼叫 valueOf(Object obj) 方法。 */
		getStr = getStr + "  " + String.valueOf(charArr);
		System.out.println("pr4 getStr = " + getStr);				
  }
}