Example usage for java.lang StringBuilder StringBuilder

Introduction

In this page you can find the example usage for java.lang StringBuilder StringBuilder.

Prototype

public StringBuilder(CharSequence seq)

Source Link

Document

Constructs a string builder that contains the same characters as the specified CharSequence .

Usage

From source file:Main.java

public static String constructIdList(long[] idList) {
    StringBuilder strBuild = new StringBuilder("");

    strBuild.append("[");
    for (int i = 0; i < idList.length; i++) {
        if (i != idList.length - 1) {
            strBuild.append(idList[i]);//from w w  w  .  ja va 2  s  .c  o  m
            strBuild.append(",");
        } else {
            strBuild.append(idList[i]);
        }
    }
    strBuild.append("]");
    // idlist end

    return strBuild.toString();
}

From source file:Main.java

public static String byteArrayToHexString(byte[] value) {
    StringBuilder stringBuilder = new StringBuilder("");
    for (int i = 0; i < value.length; i++) {
        int v = value[i] & 0xFF;
        String hv = Integer.toHexString(v);
        if (hv.length() < 2) {
            stringBuilder.append(0);/*from   ww w.ja  va2 s.  c o  m*/
        }
        stringBuilder.append(hv);
    }
    return stringBuilder.toString();
}

From source file:Main.java

public static String bytesToHexString(byte[] src) {
    StringBuilder stringBuilder = new StringBuilder("");
    if (src == null || src.length <= 0) {
        return null;
    }//from  w  w  w .j  av a  2s .  c o m
    for (int i = 0; i < src.length; i++) {
        int v = src[i] & 0xFF;
        String hv = Integer.toHexString(v);
        if (hv.length() < 2) {
            stringBuilder.append(0);
        }
        stringBuilder.append(hv + " ");
    }
    return stringBuilder.toString();
}

From source file:Main.java

public static String prettyShortParams(Class... params) {
    StringBuilder signature = new StringBuilder("(");

    for (int i = 0; i < params.length; i++) {
        signature.append(humanShort(params[i]));
        if (i < params.length - 1)
            signature.append(',');
    }/*  ww  w .jav a2s.  c  o m*/

    signature.append(")");

    return signature.toString();
}

From source file:Main.java

public static String bytesToHexString(byte[] src) {
    StringBuilder stringBuilder = new StringBuilder("");
    if (src == null || src.length <= 0) {
        return null;
    }//from w w w.  j  a  v  a2s  .c  o m
    for (int i = 0; i < src.length; i++) {
        int v = src[i] & 0xFF;
        String hv = Integer.toHexString(v);
        if (hv.length() < 2) {
            stringBuilder.append(0);
        }
        stringBuilder.append(hv);
    }
    return stringBuilder.toString();
}

From source file:Main.java

public static String dumpThreads() {
    StringBuilder sb = new StringBuilder("\n");
    ThreadGroup tg, parent = Thread.currentThread().getThreadGroup();
    while ((tg = parent.getParent()) != null) {
        parent = tg;// w  ww . j  ava 2 s. co m
    }
    int size = 2 * parent.activeGroupCount();
    ThreadGroup[] list = new ThreadGroup[size];
    int actual = parent.enumerate(list, true);
    //System.out.print("found " + list);
    sb.append("tgs: " + actual + "\n");
    if (list != null && list.length > 0) {
        for (ThreadGroup g : list) {
            if (g == null) {
                continue;
            }
            sb.append("   " + g.getName() + ": " + g.activeCount() + "\n");
            Thread[] threads = new Thread[g.activeCount()];
            g.enumerate(threads, false);
            for (Thread t : threads) {
                if (t != null) {
                    sb.append("     " + t.getName() + "\n");
                }
            }
        }
    } else {
        System.out.println("empty thread group list");
    }
    return sb.toString() + "\n";
}

From source file:Main.java

public static String bytesToHexString(byte[] src) {

    StringBuilder stringBuilder = new StringBuilder("");
    if (src == null || src.length <= 0) {
        return null;
    }//from   w  ww.  j  av  a 2  s.  c o  m
    for (int i = 0; i < src.length; i++) {
        int v = src[i] & 0xFF;
        String hv = Integer.toHexString(v);
        if (hv.length() < 2) {
            stringBuilder.append(0);
        }
        stringBuilder.append(hv);
    }
    return stringBuilder.toString().toUpperCase();

}

From source file:Main.java

public static String getUserAgent(Context context) {
    StringBuilder sb = new StringBuilder("MAC_XM");
    return sb.toString();
}

From source file:Main.java

public static String getEncodingLibraryPath(Context paramContext) {
    return new StringBuilder(String.valueOf(paramContext.getApplicationInfo().nativeLibraryDir))
            .append("/libencoding.so").toString();
}

From source file:Main.java

public static String hexEncode(byte[] in) {
    StringBuilder builder = new StringBuilder(in.length * 2);

    Formatter formatter = new Formatter(builder);
    for (byte inByte : in) {
        formatter.format("%02x", inByte);
    }//www  .j  a va 2s  . c  o m

    return builder.toString();
}