strconverttest.java

Java就业的培训教程书籍

public class StrConvertTest{
	String sourceStr1 = "   There is an example about action of String";
	String sourceStr2 = "13665127089";
	String sourceStr3;
	public static void main(String args[]){
		String tempStr1,tempStr2,tempStr3;
		StringBuffer strBuf1;
		boolean boolVar1,boolVar2,boolVar3,boolVar4,boolVar5,boolVar6,boolVar7;
		int intVar1,intVar2,intVar3;
		Integer intObj;
		StrConvertTest classObj = new StrConvertTest();
		System.out.println("Source string 1:"+classObj.sourceStr1);
		System.out.println("Source string 2:"+classObj.sourceStr2);
		classObj.setStr("13681235647");
		System.out.println("Source string 3:"+classObj.sourceStr3);
		tempStr1 = classObj.sourceStr2;
		tempStr2 = classObj.sourceStr3;
		boolVar1  = tempStr1.startsWith("1366");
		System.out.println("Does source string 2 start with 1366?"+boolVar1);
		boolVar2  = tempStr1.startsWith("66",2);
		System.out.println("Does source string 2 start with 66 from index 2?"+boolVar2);
		boolVar3  = tempStr1.endsWith("89");
		System.out.println("Does source string 2 end with 89?"+boolVar3);
		boolVar4  = tempStr1.equals(tempStr2);
		System.out.println("Does source string 2 equal to source string 3?"+boolVar4);
		intVar1  = tempStr1.compareTo(tempStr2);
		System.out.println("Result of '13665127089' compare to '13681235647'"+intVar1);
		boolVar5  = tempStr1.regionMatches(false,3,"1366",0,4);
		System.out.println("Does source string 2 match with 1366 from index 3 ignoring case?"+boolVar5);
		boolVar6  = tempStr1.regionMatches(3,"1366",0,4);		
		System.out.println("Does source string 2 match with 1366 from index 3?"+boolVar6);
		strBuf1 = new StringBuffer(tempStr1);
		strBuf1.setCharAt(3,'7');
		System.out.println("After setting '7' at index 3 of '13665127089':"+strBuf1);
		strBuf1.insert(3,'5');
		System.out.println("After inserting '5' at index 3:"+strBuf1);
		strBuf1.deleteCharAt(3);
		System.out.println("After deleting '5' at index 3:"+strBuf1);
		strBuf1.replace(0,3,"135");
		System.out.println("After replacing sub string from 0 to 3:"+strBuf1);
		intObj = Integer.valueOf("1367"); 
		intVar2 = intObj.intValue();
		System.out.println("After invert string to int:"+intVar2);
		intVar2 = intVar2 +3;
		tempStr3 = Integer.toString(intVar2);
		System.out.println("After invert int to string:"+tempStr3);
	}
	void setStr(String str){
		sourceStr3 = str;
	}
}