Chaining.bytecode

Compiled from "Chaining.java"
public class Chaining {
  public Chaining();
    Code:
       0: aload_0
       1: invokespecial #1                  // Method java/lang/Object."<init>":()V
       4: aload_0
       5: ldc           #2                  // String 111111111111111111111111
       7: putfield      #3                  // Field a1:Ljava/lang/String;
      10: aload_0
      11: ldc           #4                  // String 222222222222222222222222
      13: putfield      #5                  // Field a2:Ljava/lang/String;
      16: aload_0
      17: ldc           #6                  // String 333333333333333333333333
      19: putfield      #7                  // Field a3:Ljava/lang/String;
      22: return

  public java.lang.String typicalChaining();
    Code:
       0: new           #8                  // class java/lang/StringBuilder
       3: dup
       4: invokespecial #9                  // Method java/lang/StringBuilder."<init>":()V
       7: aload_0
       8: getfield      #3                  // Field a1:Ljava/lang/String;
      11: invokevirtual #10                 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
      14: aload_0
      15: getfield      #5                  // Field a2:Ljava/lang/String;
      18: invokevirtual #10                 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
      21: aload_0
      22: getfield      #7                  // Field a3:Ljava/lang/String;
      25: invokevirtual #10                 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
      28: invokevirtual #11                 // Method java/lang/StringBuilder.toString:()Ljava/lang/String;
      31: areturn

  public java.lang.String noChaining();
    Code:
       0: new           #8                  // class java/lang/StringBuilder
       3: dup
       4: invokespecial #9                  // Method java/lang/StringBuilder."<init>":()V
       7: astore_1
       8: aload_1
       9: aload_0
      10: getfield      #3                  // Field a1:Ljava/lang/String;
      13: invokevirtual #10                 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
      16: pop
      17: aload_1
      18: aload_0
      19: getfield      #5                  // Field a2:Ljava/lang/String;
      22: invokevirtual #10                 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
      25: pop
      26: aload_1
      27: aload_0
      28: getfield      #7                  // Field a3:Ljava/lang/String;
      31: invokevirtual #10                 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
      34: pop
      35: aload_1
      36: invokevirtual #11                 // Method java/lang/StringBuilder.toString:()Ljava/lang/String;
      39: areturn

  public java.lang.String concatenation();
    Code:
       0: new           #8                  // class java/lang/StringBuilder
       3: dup
       4: invokespecial #9                  // Method java/lang/StringBuilder."<init>":()V
       7: aload_0
       8: getfield      #3                  // Field a1:Ljava/lang/String;
      11: invokevirtual #10                 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
      14: aload_0
      15: getfield      #5                  // Field a2:Ljava/lang/String;
      18: invokevirtual #10                 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
      21: aload_0
      22: getfield      #7                  // Field a3:Ljava/lang/String;
      25: invokevirtual #10                 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
      28: invokevirtual #11                 // Method java/lang/StringBuilder.toString:()Ljava/lang/String;
      31: astore_1
      32: aload_1
      33: areturn
}

Chaining.java

public class Chaining {
    private String a1 = "111111111111111111111111";
    private String a2 = "222222222222222222222222";
    private String a3 = "333333333333333333333333";

    public String typicalChaining() {
        return new StringBuilder().append(a1).append(a2).append(a3).toString();
    }
    
    public String noChaining() {
        StringBuilder sb = new StringBuilder();
        sb.append(a1);
        sb.append(a2);
        sb.append(a3);
        return sb.toString();
    }

    public String concatenation() {
	    String result = a1 + a2 + a3;
    	return result;
    }
}